refactoring: added comments

src/ggT/main.c

@@ -3,10 +3,16 @@
 #include <stdio.h>
 
 int main(){
+
+    // Getting user input for the two numbers
     printf("Please add the two numbers you want the ggT of:\n");
     int firstNum = usergetd("first number: ", 0, NULL);
     int secondNum = usergetd("second number: ", 0, NULL);
+
+    // Calculating the ggT of those two numbers
     int result = ggT(firstNum, secondNum);
+
+    // Print the result
     printf("The ggT of %d and %d is: %d\n", firstNum, secondNum, result);
 
     return 0;