dd1994/sumDiff.c

## sumDiff.c
#include <stdio.h>

void sumDiff(int , int , int *, int *);

int main(void)
{
  int a, b, sum, diff;

  while(scanf("%d %d", &a, &b) != EOF)
  {
    sumDiff(a, b, &sum, &diff);

    printf("sum=%d diff=%d\n", sum, diff);
  }

  return 0;
}

void sumDiff(int op1, int op2, int *pSum, int *pDiff)
{
  *pSum = op1 + op2;
  *pDiff = op1 - op2;
}
	#include <stdio.h>

	void sumDiff(int , int , int , int );

	int main(void)
	{
	int a, b, sum, diff;

	while(scanf("%d %d", &a, &b) != EOF)
	{
	sumDiff(a, b, &sum, &diff);

	printf("sum=%d diff=%d\n", sum, diff);
	}

	return 0;
	}

	void sumDiff(int op1, int op2, int pSum, int pDiff)
	{
	*pSum = op1 + op2;
	*pDiff = op1 - op2;
	}