Thread: using of pointer

Hi,
I have write out a code that use a pointer and print out the sum of two squared value. I am not sure where i go wrong in the code, can anyone correct my error??
Thanks.

Code:

#include <stdio.h>

int sumsq(int *a, int *b);

int main(void)
{
  printf("Sum of 4 square and 2 square (passed by reference) is %d", sumsq(4, 2));
  int sumsq();
  return(0);
}

int sumsq(int *a, int *b)
{
  int *sum;
  *sum = (*a * *a) + (*b * *b);
  printf("%d", *sum);
  return (*sum);
}

Contrast with:

Code:

#include <stdio.h>

int sumsq(int *a, int *b);

int main(void)
{
   int x = 4, y = 2;
   printf("Sum of 4 square and 2 square (passed by reference) is %d", sumsq(&x, &y));
   return(0);
}

int sumsq(int *a, int *b)
{
   int sum;
   sum = (*a * *a) + (*b * *b);
   printf("%d", sum);
   return(sum);
}

Thanks.... i got it...