Sub-programs definition & call

5. The abs program computes a value (:the absolute value of x) and can be improved by using a return. The value returned can then be used in any integer expression

int abs() {
   int x = -12;
   if (x<0) { x=-x; } else {}
   //printf("%i",x);
   return x;
}

int main() {
   printf("%i", abs() );
}

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