为什么这样不对，其他人的：

#include <stdio.h>
int main()
{
    int x,y,J1,J2,J3,J4,J5;
    x = 10;
    y = -3;
    J1 = x+y;
    J2 = x-y;
    J3 = x*y;
    J4 = x/y;
    J5 = x%y;
    printf("x+y=%d\n",J1); 
    printf("x-y=%d\n",J2);
    printf("x*y=%d\n",J3);
    printf("x/y=%d\n",J4);
    printf("x%y=%d\n",J5); 
    return 0;   
}

不是输出项不存在吗～求解