Happy About the progress

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);
+}