commit 79415e38db57307ef492e557f4fce4c580f20564
Author: Hayet <hayetfahad@hotmail.com>
Date:   Thu May 28 10:16:10 2026 +0000

    Happy About the progress

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..f00631a
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+libcs50/
+a.out
diff --git a/Assembly/asem b/Assembly/asem
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diff --git a/Assembly/asem.o b/Assembly/asem.o
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diff --git a/Assembly/asem.s b/Assembly/asem.s
new file mode 100644
index 0000000..c2caa97
--- /dev/null
+++ b/Assembly/asem.s
@@ -0,0 +1,21 @@
+.global _start
+.intel_syntax noprefix
+
+_start:
+	// sys_write
+	mov rax, 1
+	mov rdi, 1
+	lea rsi, [hello_world]
+	mov rdx, 14
+	syscall
+
+
+	// sys_exit
+	mov rdi, 60
+	mov rdi, 69
+	syscall
+
+hello_world:
+	.asciz "Hello, World!\n"
+	
+
diff --git a/Assembly/asenm.o b/Assembly/asenm.o
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diff --git a/Assembly/readme.txt b/Assembly/readme.txt
new file mode 100644
index 0000000..88840f4
--- /dev/null
+++ b/Assembly/readme.txt
@@ -0,0 +1,11 @@
+
+# VIM Notes
+
+:wq - Save and Exit
+:q! - Exit without Saving
+:q - Exit only If Unchanged. 
+:x Quick Save and Exit.
+
+# Keyboard Shortcuts
+ESC - From Normal to a state where you can enter commands. 
+I = Get into Insert mode.
diff --git a/Hayet_Classwork/Programs/agree b/Hayet_Classwork/Programs/agree
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index 0000000..eaa005a
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diff --git a/Hayet_Classwork/Programs/cat b/Hayet_Classwork/Programs/cat
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index 0000000..74a3fe2
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diff --git a/Hayet_Classwork/Programs/compare b/Hayet_Classwork/Programs/compare
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index 0000000..343b0f8
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diff --git a/Hayet_Classwork/Programs/hello b/Hayet_Classwork/Programs/hello
new file mode 100755
index 0000000..f125449
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diff --git a/Hayet_Classwork/agree.c b/Hayet_Classwork/agree.c
new file mode 100644
index 0000000..e3aa64f
--- /dev/null
+++ b/Hayet_Classwork/agree.c
@@ -0,0 +1,20 @@
+#include <stdio.h>
+#include <cs50.h>
+
+int main(void)
+
+{
+    char c = get_char("Do you agree? ");
+
+    if (c == 'y' || c == 'Y')
+
+    { 
+        printf("Agreed.\n");
+    
+    }
+
+    else
+    {
+        printf("Not Agreed.'\n");
+    }
+}
\ No newline at end of file
diff --git a/Hayet_Classwork/cat.c b/Hayet_Classwork/cat.c
new file mode 100644
index 0000000..538e086
--- /dev/null
+++ b/Hayet_Classwork/cat.c
@@ -0,0 +1,18 @@
+#include <cs50.h>
+#include <stdio.h>
+//Proacive Promise for future.
+void meow(int tiomes);
+
+int main (void)
+{
+    int n = get_int("What's n? ");
+    meow(n);
+}
+
+void meow(int times)
+{
+    for (int i = 0; i < times; i++)
+    {
+        printf("meow\n");
+    }
+}
\ No newline at end of file
diff --git a/Hayet_Classwork/compare.c b/Hayet_Classwork/compare.c
new file mode 100644
index 0000000..5707de3
--- /dev/null
+++ b/Hayet_Classwork/compare.c
@@ -0,0 +1,15 @@
+#include <cs50.h>
+#include <stdio.h>
+
+int main(void)
+
+{
+    int x = get_int("What's x? ");
+    int y = get_int("what's y? ");
+
+    if (x < y)
+
+    {
+        printf("x is greater than y\n");
+    }
+}
diff --git a/Hayet_Classwork/hello.c b/Hayet_Classwork/hello.c
new file mode 100644
index 0000000..0288300
--- /dev/null
+++ b/Hayet_Classwork/hello.c
@@ -0,0 +1,8 @@
+#include <cs50.h>
+#include <stdio.h>
+
+int main(void)
+{
+    string answer = get_string("What's your name? ");
+    printf("Hello, %s\n", answer);
+}
\ No newline at end of file
diff --git a/Hayet_Classwork/notes.txt b/Hayet_Classwork/notes.txt
new file mode 100644
index 0000000..f503dbb
--- /dev/null
+++ b/Hayet_Classwork/notes.txt
@@ -0,0 +1,13 @@
+Conditional
+If (boolean-expression)
+{
+
+}
+
+else
+
+{
+
+}
+
+// If the boolean-expression evaluates to true , all lines of code between phrases.
diff --git a/Hayet_Classwork/struct.c b/Hayet_Classwork/struct.c
new file mode 100644
index 0000000..9fa4f8a
--- /dev/null
+++ b/Hayet_Classwork/struct.c
@@ -0,0 +1,39 @@
+#include <cs50.h>
+#include <stdio.h>
+
+typedef struct
+{
+	string name;
+	int votes;
+
+} candidate;
+
+candidate get_candidate(void);
+
+int main(void)
+{
+	candidate candidates[3];
+
+	for (int i =0; i <3; i++)
+	{
+		candidates[i] = get_candidate();
+	}
+	
+	for (int i = 0; i < 3; i++)
+	{
+	printf("Candidate %i is named %s and has %i votes.\n",i + 1, candidates[i].name, candidates[i].votes);
+
+	}
+}
+
+// Function to get a new candidate
+
+candidate get_candidate(void)
+{
+	candidate new_candidate;
+	new_candidate.name = get_string("Name: ") ;
+	new_candidate.votes = get_int("Votes:") ;
+
+	return new_candidate;
+
+}
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..66d4513
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,2 @@
+iteration:
+	clang iteration.c -lcs50 -o iteration
diff --git a/a.out b/a.out
new file mode 100644
index 0000000..e69de29
diff --git a/buggy b/buggy
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diff --git a/buggy.c b/buggy.c
new file mode 100644
index 0000000..8c2cca4
--- /dev/null
+++ b/buggy.c
@@ -0,0 +1,8 @@
+#include <cs50.h>
+#include <stdio.h>
+
+int main(void)
+{
+	string name = get_string("What's your name> ");
+	printf("hello, %s\n", name);
+}
diff --git a/calculator.c b/calculator.c
new file mode 100644
index 0000000..594855b
--- /dev/null
+++ b/calculator.c
@@ -0,0 +1,2 @@
+#include <cs50.h>
+#include <stdio.h>
diff --git a/cond.c b/cond.c
new file mode 100644
index 0000000..ae17606
--- /dev/null
+++ b/cond.c
@@ -0,0 +1,20 @@
+#include <cs50.h>
+#include <stdio.h>
+
+{
+	int x = get_int();
+	switch(x)
+	{
+		case 5:
+			printf("Five, ");
+		case 4:
+			printf("Four, ");
+		case 3:
+			printf("Three, ");
+		case 2:
+			printf("Two, ");
+		case 1:
+			printf("One, ");
+		default:
+			printf("Blast-off!\n");
+	}
diff --git a/conditional.c b/conditional.c
new file mode 100644
index 0000000..1e5f447
--- /dev/null
+++ b/conditional.c
@@ -0,0 +1,32 @@
+//Boolean expression.
+if (balance < 0)
+
+{
+    printf("Insufficient Funds");
+
+}
+else
+{
+    printf("Available Balance");
+}
+
+//For Loops
+for (int i =1; i <=30; i++)
+{
+    printf("I can count to %i!\n", i);
+} 
+
+// While Loops
+int i =1;
+while (i <= 30)
+{
+    printf("I can count to %i")
+    i++; //Direction ->
+}
+
+int n;
+{
+n = get_int("N; ");
+
+}
+while (n <= 0);
\ No newline at end of file
diff --git a/contacts b/contacts
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diff --git a/contacts.c b/contacts.c
new file mode 100644
index 0000000..f220beb
--- /dev/null
+++ b/contacts.c
@@ -0,0 +1,22 @@
+#include <cs50.h>
+#include <stdio.h>
+
+int main(void)
+
+{
+	string name = get_string("Name: ");
+	int age = get_int("Age: " );
+	string phone = get_string("Phone number: ");
+	string location = get_string("what's your location? " );
+// Correct Version of This program is 
+// int age = get_int("Age: ");
+// int phone = get_int("Phone: ")";"
+// Location is correct on the above program so its okay.
+
+//	printf("Name:, %s\n", name);
+//	printf("Age:, %s\n", age);
+//	printf("Location:, %s\n", location);
+
+	printf("New Contacts: %s, %i, lives in %s, and can be reached at %s\n", name, age, location, phone );
+
+}
diff --git a/factorial b/factorial
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diff --git a/factorial.c b/factorial.c
new file mode 100644
index 0000000..d5d0ae4
--- /dev/null
+++ b/factorial.c
@@ -0,0 +1,23 @@
+#include <cs50.h>
+#include <stdio.h>
+
+int factorial(int n);
+
+int main(void)
+{
+	int n = get_int("Factorial of: ");
+	printf("Factorial of %i is %i\n", n, factorial(n));
+
+}
+
+int factorial(int n)
+{
+	// Base case
+	if (n == 0)
+	{
+		return 1;
+	}
+	
+	// Recursive case
+	return n * factorial(n - 1);
+}
diff --git a/fibonacci b/fibonacci
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diff --git a/fibonacci.c b/fibonacci.c
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index 0000000..7147d7e
--- /dev/null
+++ b/fibonacci.c
@@ -0,0 +1,32 @@
+#include <cs50.h>
+#include <stdio.h>
+
+int fib(int n);
+
+int main(void)
+
+{
+	int n = get_int("Fibonacci: ");
+	printf("The %i Fibonacci number is %i\n", n, fib(n));
+}
+
+
+// Takes which fibonacci number you want, returns that
+
+int fib(int n)
+{
+	// Base Case
+	if (n ==0)
+	{
+		return 0;
+	}
+	
+	if (n == 1)
+	{
+		return 1;
+	}
+
+// Renursive Case
+	return fib(n-1) + fib(n-2);
+}
+
diff --git a/hello b/hello
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diff --git a/hello.c b/hello.c
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index 0000000..088df65
--- /dev/null
+++ b/hello.c
@@ -0,0 +1,9 @@
+#include <cs50.h>
+#include <stdio.h>
+
+int main(void)
+{
+	string name = get_string("What's your name? ");
+// %s = percentage i just operator and "s"is for  string.
+	printf("Hello, %s\n", name);
+}
diff --git a/iteration b/iteration
new file mode 100755
index 0000000..1b1dafc
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diff --git a/iteration.c b/iteration.c
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index 0000000..02fcc08
--- /dev/null
+++ b/iteration.c
@@ -0,0 +1,25 @@
+#include <cs50.h>
+#include <stdio.h>
+
+// Prototype 
+void draw(int n);
+
+int main(void)
+{
+	int height = get_int("Height: ");
+	draw (height);
+
+}
+// Prototype now being used.
+void draw(int n)
+{
+	// for each row of pyramid
+	for (int i = 0; i < n; i++)
+	{
+		for (int j = 0; j < i; j++)
+		{
+			printf("#");
+		}
+		printf("\n");
+	}
+}
diff --git a/mario b/mario
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diff --git a/mario.c b/mario.c
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index 0000000..b4fe412
--- /dev/null
+++ b/mario.c
@@ -0,0 +1,17 @@
+#include <stdio.h>
+
+int main(void)
+{
+	const int n = 3;
+	//for each row
+	for (int row = 0; row < 10; row++)
+	{
+		//for Each Coloumn
+		for (int column = 0; column < 10; column++)
+		{	
+		// Print on brick
+		printf("#");
+		}	
+		printf("\n");
+	}
+}
\ No newline at end of file
diff --git a/marioo b/marioo
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diff --git a/marioo.c b/marioo.c
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index 0000000..f058adf
--- /dev/null
+++ b/marioo.c
@@ -0,0 +1,30 @@
+#include <cs50.h>
+#include <stdio.h>
+
+void print_row(int bricks);
+
+int main(void)
+{
+    // Prompt user for heing (int)
+    int height = get_int("Height: ");
+
+    // Print Payramid of that height
+    for (int i = 0; i <= height; i++)
+    {
+        print_row(i + 1);
+
+        //Print row based on height
+        printf("#");
+        printf("\n");
+    }
+   
+}
+// Given a how many a # to print out, print that number of bricks
+void print_row(int bricks)
+{
+    for (int i = 0; i< bricks; i++)
+    {
+        printf("#");
+    }
+    printf("\n");
+}
\ No newline at end of file
diff --git a/note.txt b/note.txt
new file mode 100644
index 0000000..b451de4
--- /dev/null
+++ b/note.txt
@@ -0,0 +1,22 @@
+# Check Code Server Status
+sudo systemctl status code-server@$USER
+
+# Start the Code Server
+sudo systemctl start code-server@$USER
+
+# Git - Cheat Sheet
+
+// First Set the Username and Email
+git config --global user.name "Hayet"
+git config --global user.email "your_email@example.com"
+
+// 
+git status
+git add.
+git commit -m "Happy About the progress"
+
+// Ignore a specific File
+vi .gitignore
+- libcs50/
+- a.out
+
diff --git a/phonebook b/phonebook
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diff --git a/phonebook.c b/phonebook.c
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index 0000000..4f15380
--- /dev/null
+++ b/phonebook.c
@@ -0,0 +1,39 @@
+#include <cs50.h>
+#include <stdio.h>
+#include <string.h>
+
+typedef struct
+
+{
+	string name;
+	string number;
+
+} person;
+
+int main(void)
+
+{
+	person people[3];
+
+	people[0].name = ""Kelly";
+	people[0].number = "+091398023890123";
+
+	people[1].name = "Hayet";
+	people[1].number = "77666327";
+
+	people [2].name ="Munna";
+	people[2].number ="59950786";
+
+	string name = get_string("Name: ");
+	for (int i = 0 ; i < 3; i++)
+
+	{ 
+		if (strcmp(people[i].name, name) == 0)
+		{
+			printf("Found %s\n", people[i].number);
+			return 0;
+		}
+	}
+	printf("Not fouind \n");
+	return 1;
+}
diff --git a/readme.txt b/readme.txt
new file mode 100644
index 0000000..ed63a6c
--- /dev/null
+++ b/readme.txt
@@ -0,0 +1,25 @@
+nano hello.c
+
+#----------------- Program -------------------
+
+#include <stdio.h>
+
+int main(void)
+{
+    printf("Hello, world!\n");
+}
+
+
+# ----------- End ------------------------
+
+# Compilation
+gcc hello.c -o hello#
+
+./hello
+
+# -------------------------------------------
+Important Bookmarks
+
+https://cs50.harvard.edu/x/notes/1/#header-files-and-cs50-manual-pages
+https://manual.cs50.io/
+
diff --git a/recursion b/recursion
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diff --git a/recursion.c b/recursion.c
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index 0000000..2627b4a
--- /dev/null
+++ b/recursion.c
@@ -0,0 +1,31 @@
+#include <cs50.h>
+#include <stdio.h>
+
+void draw(int n);
+
+int main(void)
+
+{
+	int height = get_int("Height; ");
+
+	draw(height);
+}
+
+void draw(int n)
+{
+	// Base case, making sure loop has exit condition.
+	if (n <= 0)
+	{
+		return;
+	}
+
+	// Print a pyramid of height n -1
+	draw (n-1);
+
+	// Print one more row
+	for (int i =0; i < n; i++)
+	{
+		printf("#");
+	}
+	printf("\n");
+}
diff --git a/search b/search
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diff --git a/search.c b/search.c
new file mode 100644
index 0000000..9f5a9b2
--- /dev/null
+++ b/search.c
@@ -0,0 +1,20 @@
+#include <cs50.h>
+#include <stdio.h>
+
+int main (void)
+
+{
+	int numbers[] = {20, 500, 10, 5, 100, 1, 50};
+
+	int n = get_int("Number: ");
+	for (int i = 0; i < 7; i++)
+	{ 
+		if (numbers[i] == n)
+		{
+			printf("Found\n");
+			return 0;
+		}
+	}	
+	printf("Not found\n");
+	return 1;
+}
diff --git a/src1/agree0.c b/src1/agree0.c
new file mode 100644
index 0000000..cc68b1c
--- /dev/null
+++ b/src1/agree0.c
@@ -0,0 +1,20 @@
+// Comparing against lowercase char
+
+#include <cs50.h>
+#include <stdio.h>
+
+int main(void)
+{
+    // Prompt user to agree
+    char c = get_char("Do you agree? ");
+
+    // Check whether agreed
+    if (c == 'y')
+    {
+        printf("Agreed.\n");
+    }
+    else if (c == 'n')
+    {
+        printf("Not agreed.\n");
+    }
+}
diff --git a/src1/agree1.c b/src1/agree1.c
new file mode 100644
index 0000000..3d2dba1
--- /dev/null
+++ b/src1/agree1.c
@@ -0,0 +1,24 @@
+// Comparing against lowercase and uppercase char
+
+#include <cs50.h>
+#include <stdio.h>
+
+int main(void)
+{
+    // Prompt user to agree
+    char c = get_char("Do you agree? ");
+
+    // Check whether agreed
+    if (c == 'y')
+    {
+        printf("Agreed.\n");
+    }
+    else if (c == 'Y')
+    {
+        printf("Agreed.\n");
+    }
+    else
+    {
+        printf("Not agreed.\n");
+    }
+}
diff --git a/src1/agree2.c b/src1/agree2.c
new file mode 100644
index 0000000..9cb39e5
--- /dev/null
+++ b/src1/agree2.c
@@ -0,0 +1,20 @@
+// Logical operators
+
+#include <cs50.h>
+#include <stdio.h>
+
+int main(void)
+{
+    // Prompt user to agree
+    char c = get_char("Do you agree? ");
+
+    // Check whether agreed
+    if (c == 'Y' || c == 'y')
+    {
+        printf("Agreed.\n");
+    }
+    else
+    {
+        printf("Not agreed.\n");
+    }
+}
diff --git a/src1/calculator0.c b/src1/calculator0.c
new file mode 100644
index 0000000..235d4b1
--- /dev/null
+++ b/src1/calculator0.c
@@ -0,0 +1,19 @@
+// Addition with int
+
+#include <cs50.h>
+#include <stdio.h>
+
+int main(void)
+{
+    // Prompt user for x
+    int x = get_int("What's x? ");
+
+    // Prompt user for y
+    int y = get_int("What's y? ");
+
+    // Add numbers
+    int z = x + y;
+
+    // Perform addition
+    printf("%i\n", z);
+}
diff --git a/src1/calculator1.c b/src1/calculator1.c
new file mode 100644
index 0000000..71d2155
--- /dev/null
+++ b/src1/calculator1.c
@@ -0,0 +1,16 @@
+// Addition with int, without third variable
+
+#include <cs50.h>
+#include <stdio.h>
+
+int main(void)
+{
+    // Prompt user for x
+    int x = get_int("What's x? ");
+
+    // Prompt user for y
+    int y = get_int("What's y? ");
+
+    // Perform addition
+    printf("%i\n", x + y);
+}
diff --git a/src1/calculator2.c b/src1/calculator2.c
new file mode 100644
index 0000000..72d8870
--- /dev/null
+++ b/src1/calculator2.c
@@ -0,0 +1,13 @@
+// Doubles a number
+
+#include <cs50.h>
+#include <stdio.h>
+
+int main(void)
+{
+    // Prompt user for x
+    int x = get_int("What's x? ");
+
+    // Double it
+    printf("%i\n", x * 2);
+}
diff --git a/src1/calculator3.c b/src1/calculator3.c
new file mode 100644
index 0000000..b616b5a
--- /dev/null
+++ b/src1/calculator3.c
@@ -0,0 +1,22 @@
+// Overflow 
+
+#include <cs50.h>
+#include <stdio.h>
+
+int main(void)
+{
+    int dollars = 1;
+    while (true)
+    {
+        char c = get_char("Here's $%i. Double it and give to next person? ", dollars);
+        if (c == 'y')
+        {
+            dollars *= 2;
+        }
+        else
+        {
+            break;
+        }
+    }
+    printf("Here's $%i.\n", dollars);
+}
diff --git a/src1/calculator4.c b/src1/calculator4.c
new file mode 100644
index 0000000..d629c22
--- /dev/null
+++ b/src1/calculator4.c
@@ -0,0 +1,22 @@
+// long
+
+#include <cs50.h>
+#include <stdio.h>
+
+int main(void)
+{
+    long dollars = 1;
+    while (true)
+    {
+        char c = get_char("Here's $%li. Double it and give to next person? ", dollars);
+        if (c == 'y')
+        {
+            dollars *= 2;
+        }
+        else
+        {
+            break;
+        }
+    }
+    printf("Here's $%li.\n", dollars);
+}
diff --git a/src1/calculator5.c b/src1/calculator5.c
new file mode 100644
index 0000000..96de636
--- /dev/null
+++ b/src1/calculator5.c
@@ -0,0 +1,16 @@
+// Division with ints, demonstrating truncation
+
+#include <cs50.h>
+#include <stdio.h>
+
+int main(void)
+{
+    // Prompt user for x
+    int x = get_int("What's x? ");
+
+    // Prompt user for y
+    int y = get_int("What's y? ");
+
+    // Divide x by y
+    printf("%i\n", x / y);
+}
diff --git a/src1/calculator6.c b/src1/calculator6.c
new file mode 100644
index 0000000..b49eeb1
--- /dev/null
+++ b/src1/calculator6.c
@@ -0,0 +1,16 @@
+// Casting
+
+#include <cs50.h>
+#include <stdio.h>
+
+int main(void)
+{
+    // Prompt user for x
+    int x = get_int("What's x? ");
+
+    // Prompt user for y
+    int y = get_int("What's y? ");
+
+    // Divide x by y
+    printf("%f\n", (float) x / y);
+}
diff --git a/src1/calculator7.c b/src1/calculator7.c
new file mode 100644
index 0000000..925d795
--- /dev/null
+++ b/src1/calculator7.c
@@ -0,0 +1,16 @@
+// Floats
+
+#include <cs50.h>
+#include <stdio.h>
+
+int main(void)
+{
+    // Prompt user for x
+    float x = get_float("What's x? ");
+
+    // Prompt user for y
+    float y = get_float("What's y? ");
+
+    // Divide x by y
+    printf("%.50f\n", x / y);
+}
diff --git a/src1/cat0.c b/src1/cat0.c
new file mode 100644
index 0000000..457aa39
--- /dev/null
+++ b/src1/cat0.c
@@ -0,0 +1,10 @@
+// Opportunity for better design
+
+#include <stdio.h>
+
+int main(void)
+{
+    printf("meow\n");
+    printf("meow\n");
+    printf("meow\n");
+}
diff --git a/src1/cat1.c b/src1/cat1.c
new file mode 100644
index 0000000..d9a63fc
--- /dev/null
+++ b/src1/cat1.c
@@ -0,0 +1,13 @@
+// Better design
+
+#include <stdio.h>
+
+int main(void)
+{
+    int i = 3;
+    while (i > 0)
+    {
+        printf("meow\n");
+        i--;
+    }
+}
diff --git a/src1/cat10.c b/src1/cat10.c
new file mode 100644
index 0000000..b9fd989
--- /dev/null
+++ b/src1/cat10.c
@@ -0,0 +1,19 @@
+// Uses a do-while loop instead.
+
+#include <cs50.h>
+#include <stdio.h>
+
+int main(void)
+{
+    int n;
+    do
+    {
+        n = get_int("What's n? ");
+    }
+    while (n < 0);
+
+    for (int i = 0; i < n; i++)
+    {
+        printf("meow\n");
+    }
+}
diff --git a/src1/cat11.c b/src1/cat11.c
new file mode 100644
index 0000000..d118657
--- /dev/null
+++ b/src1/cat11.c
@@ -0,0 +1,19 @@
+// Abstraction
+
+#include <stdio.h>
+
+void meow(void);
+
+int main(void)
+{
+    for (int i = 0; i < 3; i++)
+    {
+        meow();
+    }
+}
+
+// Meow once
+void meow(void)
+{
+    printf("meow\n");
+}
diff --git a/src1/cat12.c b/src1/cat12.c
new file mode 100644
index 0000000..4a3d500
--- /dev/null
+++ b/src1/cat12.c
@@ -0,0 +1,19 @@
+// Abstraction with parameterization
+
+#include <stdio.h>
+
+void meow(int n);
+
+int main(void)
+{
+    meow(3);
+}
+
+// Meow some number of times
+void meow(int n)
+{
+    for (int i = 0; i < n; i++)
+    {
+        printf("meow\n");
+    }
+}
diff --git a/src1/cat13.c b/src1/cat13.c
new file mode 100644
index 0000000..e8fea6e
--- /dev/null
+++ b/src1/cat13.c
@@ -0,0 +1,20 @@
+// Demonstrates scope
+
+#include <stdio.h>
+
+void meow(int n);
+
+int main(void)
+{
+    int n = 3;
+    meow(n);
+}
+
+// Meow some number of times
+void meow(int n)
+{
+    for (int i = 0; i < n; i++)
+    {
+        printf("meow\n");
+    }
+}
diff --git a/src1/cat14.c b/src1/cat14.c
new file mode 100644
index 0000000..2427fe7
--- /dev/null
+++ b/src1/cat14.c
@@ -0,0 +1,26 @@
+// User input
+
+#include <cs50.h>
+#include <stdio.h>
+
+void meow(int n);
+
+int main(void)
+{
+    int n;
+    do
+    {
+        n = get_int("Number: ");
+    }
+    while (n < 1);
+    meow(n);
+}
+
+// Meow some number of times
+void meow(int n)
+{
+    for (int i = 0; i < n; i++)
+    {
+        printf("meow\n");
+    }
+}
diff --git a/src1/cat15.c b/src1/cat15.c
new file mode 100644
index 0000000..68527d3
--- /dev/null
+++ b/src1/cat15.c
@@ -0,0 +1,34 @@
+// Return value
+
+#include <cs50.h>
+#include <stdio.h>
+
+int get_positive_int(void);
+void meow(int n);
+
+int main(void)
+{
+    int n = get_positive_int();
+    meow(n);
+}
+
+// Get number of meows
+int get_positive_int(void)
+{
+    int n;
+    do
+    {
+        n = get_int("Number: ");
+    }
+    while (n < 1);
+    return n;
+}
+
+// Meow some number of times
+void meow(int n)
+{
+    for (int i = 0; i < n; i++)
+    {
+        printf("meow\n");
+    }
+}
diff --git a/src1/cat2.c b/src1/cat2.c
new file mode 100644
index 0000000..8aa91e1
--- /dev/null
+++ b/src1/cat2.c
@@ -0,0 +1,13 @@
+// Print values of i
+
+#include <stdio.h>
+
+int main(void)
+{
+    int i = 1;
+    while (i <= 3)
+    {
+        printf("meow\n");
+        i++;
+    }
+}
diff --git a/src1/cat3.c b/src1/cat3.c
new file mode 100644
index 0000000..88ce846
--- /dev/null
+++ b/src1/cat3.c
@@ -0,0 +1,13 @@
+// Better design
+
+#include <stdio.h>
+
+int main(void)
+{
+    int i = 0;
+    while (i < 3)
+    {
+        printf("meow\n");
+        i++;
+    }
+}
diff --git a/src1/cat4.c b/src1/cat4.c
new file mode 100644
index 0000000..023f307
--- /dev/null
+++ b/src1/cat4.c
@@ -0,0 +1,11 @@
+// Better design
+
+#include <stdio.h>
+
+int main(void)
+{
+    for (int i = 0; i < 3; i++)
+    {
+        printf("meow\n");
+    }
+}
diff --git a/src1/cat5.c b/src1/cat5.c
new file mode 100644
index 0000000..7ca7dbc
--- /dev/null
+++ b/src1/cat5.c
@@ -0,0 +1,12 @@
+// Infinite loop
+
+#include <cs50.h>
+#include <stdio.h>
+
+int main(void)
+{
+    while (true)
+    {
+        printf("meow\n");
+    }
+}
diff --git a/src1/cat6.c b/src1/cat6.c
new file mode 100644
index 0000000..1afc1e3
--- /dev/null
+++ b/src1/cat6.c
@@ -0,0 +1,14 @@
+// Prompts user for n.
+
+#include <cs50.h>
+#include <stdio.h>
+
+int main(void)
+{
+    int n = get_int("What's n? ");
+
+    for (int i = 0; i < n; i++)
+    {
+        printf("meow\n");
+    }
+}
diff --git a/src1/cat7.c b/src1/cat7.c
new file mode 100644
index 0000000..a0dcb29
--- /dev/null
+++ b/src1/cat7.c
@@ -0,0 +1,18 @@
+// Prompts user again if need be. (Poor design.)
+
+#include <cs50.h>
+#include <stdio.h>
+
+int main(void)
+{
+    int n = get_int("What's n? ");
+    if (n < 0)
+    {
+        n = get_int("What's n? ");
+    }
+
+    for (int i = 0; i < n; i++)
+    {
+        printf("meow\n");
+    }
+}
diff --git a/src1/cat8.c b/src1/cat8.c
new file mode 100644
index 0000000..8636407
--- /dev/null
+++ b/src1/cat8.c
@@ -0,0 +1,26 @@
+// Uses a loop with continue/break.
+
+#include <cs50.h>
+#include <stdio.h>
+
+int main(void)
+{
+    int n;
+    while (true)
+    {
+        n = get_int("What's n? ");
+        if (n < 0)
+        {
+            continue;
+        }
+        else
+        {
+            break;
+        }
+    }
+
+    for (int i = 0; i < n; i++)
+    {
+        printf("meow\n");
+    }
+}
diff --git a/src1/cat9.c b/src1/cat9.c
new file mode 100644
index 0000000..d6aa040
--- /dev/null
+++ b/src1/cat9.c
@@ -0,0 +1,22 @@
+// Uses a loop with just break.
+
+#include <cs50.h>
+#include <stdio.h>
+
+int main(void)
+{
+    int n;
+    while (true)
+    {
+        n = get_int("What's n? ");
+        if (n >= 0)
+        {
+            break;
+        }
+    }
+
+    for (int i = 0; i < n; i++)
+    {
+        printf("meow\n");
+    }
+}
diff --git a/src1/compare0.c b/src1/compare0.c
new file mode 100644
index 0000000..e63f8bd
--- /dev/null
+++ b/src1/compare0.c
@@ -0,0 +1,17 @@
+// Conditional, Boolean expression, relational operator
+
+#include <cs50.h>
+#include <stdio.h>
+
+int main(void)
+{
+    // Prompt user for integers
+    int x = get_int("What's x? ");
+    int y = get_int("What's y? ");
+
+    // Compare integers
+    if (x < y)
+    {
+        printf("x is less than y\n");
+    }
+}
diff --git a/src1/compare1.c b/src1/compare1.c
new file mode 100644
index 0000000..da4cab0
--- /dev/null
+++ b/src1/compare1.c
@@ -0,0 +1,21 @@
+// Conditionals that are mutually exclusive
+
+#include <cs50.h>
+#include <stdio.h>
+
+int main(void)
+{
+    // Prompt user for integers
+    int x = get_int("What's x? ");
+    int y = get_int("What's y? ");
+
+    // Compare integers
+    if (x < y)
+    {
+        printf("x is less than y\n");
+    }
+    else
+    {
+        printf("x is not less than y\n");
+    }
+}
diff --git a/src1/compare2.c b/src1/compare2.c
new file mode 100644
index 0000000..e231320
--- /dev/null
+++ b/src1/compare2.c
@@ -0,0 +1,25 @@
+// Conditionals that aren't mutually exclusive
+
+#include <cs50.h>
+#include <stdio.h>
+
+int main(void)
+{
+    // Prompt user for integers
+    int x = get_int("What's x? ");
+    int y = get_int("What's y? ");
+
+    // Compare integers
+    if (x < y)
+    {
+        printf("x is less than y\n");
+    }
+    if (x > y)
+    {
+        printf("x is greater than y\n");
+    }
+    if (x == y)
+    {
+        printf("x is equal to y\n");
+    }
+}
diff --git a/src1/compare3.c b/src1/compare3.c
new file mode 100644
index 0000000..a419964
--- /dev/null
+++ b/src1/compare3.c
@@ -0,0 +1,25 @@
+// Conditional that isn't necessary
+
+#include <cs50.h>
+#include <stdio.h>
+
+int main(void)
+{
+    // Prompt user for integers
+    int x = get_int("What's x? ");
+    int y = get_int("What's y? ");
+
+    // Compare integers
+    if (x < y)
+    {
+        printf("x is less than y\n");
+    }
+    else if (x > y)
+    {
+        printf("x is greater than y\n");
+    }
+    else if (x == y)
+    {
+        printf("x is equal to y\n");
+    }
+}
diff --git a/src1/compare4.c b/src1/compare4.c
new file mode 100644
index 0000000..ddbc2c6
--- /dev/null
+++ b/src1/compare4.c
@@ -0,0 +1,25 @@
+// Conditionals
+
+#include <cs50.h>
+#include <stdio.h>
+
+int main(void)
+{
+    // Prompt user for integers
+    int x = get_int("What's x? ");
+    int y = get_int("What's y? ");
+
+    // Compare integers
+    if (x < y)
+    {
+        printf("x is less than y\n");
+    }
+    else if (x > y)
+    {
+        printf("x is greater than y\n");
+    }
+    else
+    {
+        printf("x is equal to y\n");
+    }
+}
diff --git a/src1/hello0.c b/src1/hello0.c
new file mode 100644
index 0000000..68e40b6
--- /dev/null
+++ b/src1/hello0.c
@@ -0,0 +1,8 @@
+// A program that says hello to the world
+
+#include <stdio.h>
+
+int main(void)
+{
+    printf("hello, world\n");
+}
diff --git a/src1/hello1.c b/src1/hello1.c
new file mode 100644
index 0000000..0fdfef2
--- /dev/null
+++ b/src1/hello1.c
@@ -0,0 +1,10 @@
+// get_string and printf with incorrect placeholder
+
+#include <cs50.h>
+#include <stdio.h>
+
+int main(void)
+{
+    string answer = get_string("What's your name? ");
+    printf("hello, answer\n");
+}
diff --git a/src1/hello2.c b/src1/hello2.c
new file mode 100644
index 0000000..e55eb61
--- /dev/null
+++ b/src1/hello2.c
@@ -0,0 +1,10 @@
+// get_string and printf with %s
+
+#include <cs50.h>
+#include <stdio.h>
+
+int main(void)
+{
+    string answer = get_string("What's your name? ");
+    printf("hello, %s\n", answer);
+}
diff --git a/src1/mario0.c b/src1/mario0.c
new file mode 100644
index 0000000..1aad0c7
--- /dev/null
+++ b/src1/mario0.c
@@ -0,0 +1,8 @@
+// Prints a row of 4 question marks
+
+#include <stdio.h>
+
+int main(void)
+{
+    printf("????\n");
+}
diff --git a/src1/mario1.c b/src1/mario1.c
new file mode 100644
index 0000000..ef446bc
--- /dev/null
+++ b/src1/mario1.c
@@ -0,0 +1,12 @@
+// Prints a row of 4 question marks with a loop
+
+#include <stdio.h>
+
+int main(void)
+{
+    for (int i = 0; i < 4; i++)
+    {
+        printf("?");
+    }
+    printf("\n");
+}
diff --git a/src1/mario2.c b/src1/mario2.c
new file mode 100644
index 0000000..a8b102c
--- /dev/null
+++ b/src1/mario2.c
@@ -0,0 +1,11 @@
+// Prints a column of 3 bricks with a loop
+
+#include <stdio.h>
+
+int main(void)
+{
+    for (int i = 0; i < 3; i++)
+    {
+        printf("#\n");
+    }
+}
diff --git a/src1/mario3.c b/src1/mario3.c
new file mode 100644
index 0000000..97efbad
--- /dev/null
+++ b/src1/mario3.c
@@ -0,0 +1,15 @@
+// Prints a 3-by-3 grid of bricks with nested loops
+
+#include <stdio.h>
+
+int main(void)
+{
+    for (int i = 0; i < 3; i++)
+    {
+        for (int j = 0; j < 3; j++)
+        {
+            printf("#");
+        }
+        printf("\n");
+    }
+}
diff --git a/src1/mario4.c b/src1/mario4.c
new file mode 100644
index 0000000..52a664c
--- /dev/null
+++ b/src1/mario4.c
@@ -0,0 +1,16 @@
+// Prints a 3-by-3 grid of bricks with nested loops using a constant
+
+#include <stdio.h>
+
+int main(void)
+{
+    const int n = 3;
+    for (int i = 0; i < n; i++)
+    {
+        for (int j = 0; j < n; j++)
+        {
+            printf("#");
+        }
+        printf("\n");
+    }
+}
diff --git a/src1/mario5.c b/src1/mario5.c
new file mode 100644
index 0000000..ab98a35
--- /dev/null
+++ b/src1/mario5.c
@@ -0,0 +1,23 @@
+// Helper function
+
+#include <stdio.h>
+
+void print_row(int width);
+ 
+int main(void)
+{
+    const int n = 3;
+    for (int i = 0; i < n; i++)
+    {
+        print_row(n);
+    }
+}
+
+void print_row(int width)
+{
+    for (int i = 0; i < width; i++)
+    {
+        printf("#");
+    }
+    printf("\n");
+}
diff --git a/struct b/struct
new file mode 100755
index 0000000..1b5bf01
Binary files /dev/null and b/struct differ
diff --git a/struct.c b/struct.c
new file mode 100644
index 0000000..1114550
--- /dev/null
+++ b/struct.c
@@ -0,0 +1,34 @@
+#include <cs50.h>
+#include <stdio.h>
+
+typedef struct
+{
+	string name;
+	int votes;
+
+} candidate;
+
+candidate get_candidate(void);
+
+int main(void)
+{
+	candidate candidates[3];
+
+	for (int i =0; i <3; i++)
+	{
+		candidates[i] = get_candidate();
+		printf("Candidate %i is named %s and has %i votes. \n", i + 1, candidates[i].name, candidates[i].votes);
+	}
+}
+
+// Function to get a new candidate
+
+candidate get_candidate(void)
+{
+	candidate new_candidate;
+	new_candidate.name = get_string("Name: ") ;
+	new_candidate.votes = get_int("Votes:") ;
+
+	return new_candidate;
+
+}
diff --git a/struct1.c b/struct1.c
new file mode 100644
index 0000000..1114550
--- /dev/null
+++ b/struct1.c
@@ -0,0 +1,34 @@
+#include <cs50.h>
+#include <stdio.h>
+
+typedef struct
+{
+	string name;
+	int votes;
+
+} candidate;
+
+candidate get_candidate(void);
+
+int main(void)
+{
+	candidate candidates[3];
+
+	for (int i =0; i <3; i++)
+	{
+		candidates[i] = get_candidate();
+		printf("Candidate %i is named %s and has %i votes. \n", i + 1, candidates[i].name, candidates[i].votes);
+	}
+}
+
+// Function to get a new candidate
+
+candidate get_candidate(void)
+{
+	candidate new_candidate;
+	new_candidate.name = get_string("Name: ") ;
+	new_candidate.votes = get_int("Votes:") ;
+
+	return new_candidate;
+
+}
diff --git a/text.txt b/text.txt
new file mode 100644
index 0000000..e3a071a
--- /dev/null
+++ b/text.txt
@@ -0,0 +1 @@
+Hello This is a just a test
diff --git a/v1_search b/v1_search
new file mode 100755
index 0000000..8b9dfde
Binary files /dev/null and b/v1_search differ
diff --git a/v1_search.c b/v1_search.c
new file mode 100644
index 0000000..97b8dbd
--- /dev/null
+++ b/v1_search.c
@@ -0,0 +1,32 @@
+#include <cs50.h>
+#include <stdio.h>
+#include <string.h>
+int main (void)
+
+{
+	string strings [] = {"battleship", "boot", "cannon", "iron", "thimble", "top hat"};
+
+	string s = get_string("Strings: ");
+	for (int i = 0; i < 6; i++)
+	{ 
+		if (strcmp(strings [i], == s) == 0)
+		{
+			printf("Found\n");
+			return 0;
+		}
+	}
+	printf("Not found \n");
+	return 1;
+
+}
+
+
+
+
+
+
+
+
+
+
+