change function

#include <stdio.h>

int change(int a);

int main(){

int b=32;

printf("The value of b before change:%d\n",b);

change(b);

printf("The value of b after change:%d\n",b);

int d=change(b);

printf("The value of b in function:%d\n",d);

 return 0;

}

int change(int a)

{

    a=77;

    return a;

}