added prompt for end

Signed-off-by: BuildTools <unconfigured@null.spigotmc.org>

sum.c

@@ -11,11 +11,15 @@ int main() {
   int size = 1;
   int sum = 0;
   int pos = 0;
+  int end_scan = 1;
   int* arr = malloc(size * sizeof(int));
   
-  while(TRUE) {
-    printf("Enter a number: ");
-    scanf("%d", &(arr[pos]));
+  while(end_scan) {
+    printf("(Type EOF to end) Enter a number: ");
+    if (scanf("%d", &(arr[pos])) == EOF) {
+      end_scan = 0;
+    }
+    //scanf("%d", &(arr[pos]));
     if( arr[pos] == 0 ) {
       break;
     }