有以下程序

#include <stdio.h>

void fun( int x, int y, int *c, int *d )

{ *c = x+y; *d = x-y; }

main()

{ int a=4, b=3, c=0, d=0;

fun ( a, b, &c, &d );

printf( "%d %d\n" , c, d );

}

程序的输出结果是

• A.0 0

• B.4 3

• C.3 4

• D.7 1