Is it possible to swap C functions?

Question

Looking to see if anyone knows if its possible to swap C functions...?

 void swap2(int(*a)(int), int(*b)(int)) {
   int(*temp)(int) = a;
   *a = *b;
   *b =          


        

Answer 1

Your code will give error like "invalid lvalue" at the time of assignment. As I can see in your code you are trying to swap pointers without changing its values so have a look on below solution.

void swap2(int(**a)(int), int(**b)(int)) {   
   int(*temp)(int) = *a;
   *a = *b;
   *b = temp;
}

int main(){
    int(*temp1)(int) = &funcA;
    int(*temp2)(int) = &funcB;
    swap2(&temp1,&temp2);
}