Update 1st June 26

Hayet_Classwork/phonebook.c

@@ -0,0 +1,20 @@
+#include <cs50.h>
+#include <stdio.h>
+#include <string.h>
+
+int main(void)
+{
+	// FILE here calls FILE function from stdio.h & "a" using for apend.
+	FILE *file = fopen("phonebook.csv", "a");
+	if (file == NULL)
+	{
+		return 1;
+	}
+	char *name = get_string("Name: ");
+	char *number = get_string("Number: ");
+
+	fprintf(file, "%s, %s\n", name, number);
+
+	fclose(file);
+	return 0;
+}