/*例2. 2整数の和と差を計算して返す関数(サブルーチン)*/

#include <stdio.h>

watosa( x1, x2, wa, sa )
int x1, x2, *wa, *sa;
{
  *wa = x1+x2;
  *sa = x1-x2;
  return;
}

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

  a=10 ;
  b=8  ; 
  printf("a=%d b=%d\n", a, b );
  watosa( a, b, &sum, &diff );
  printf("wa=%d sa=%d\n", sum, diff );

  watosa( 25, 30, &sum, &diff );
  printf("wa=%d sa=%d\n", sum, diff );
  exit(1);
}