C Programming

Question

what will be the output of following program ?

would this program compile properly ?

#include  <stdio.h>

void swap(int **cc,int *dd)
{
int t=**cc;
    **cc=*dd;
    *dd=t;
}

void exchange(int *cc,int *dd)
{
swap(&cc,dd);
}
int main(void)
{
    int c=10,d=20;
    printf("befor swap c=%d  d=%d \n",c,d);
    exchange(&c,&d);
    printf("after swap c=%d  d=%d \n",c,d);
}

Comments

Yes it will swap variables correctly.

Answer 1

hope it helps.....

Answer 2

Yes it will 

Answer 3

yes this code runs correctly

Answer 4

Yes program will work...U can relate pointers like this :