#include <stdio.h>

int main()

{

    int x,y;

    x = 10;

    y = -3;

    int a = x+y;

    int b = x-y;

    int c = x*y;

    int d = x/y;

    int e = x%y;

    printf("x+y=%d\n",a);  

    printf("x-y=%d\n",b);

    printf("x*y=%d\n",c);

    printf("x/y=%d\n",d);

    printf("x%%y=%d\n",e);  

    return 0;    

}

#include <stdio.h>

int main()

{

    int x,y;

    x = 10;

    y = -3;

    //变量就是拿来用的

    printf("x+y=%d\n", x+y);  

    printf("x-y=%d\n", x-y);

    printf("x*y=%d\n",x*y);

    printf("x/y=%d\n",x/y);

    printf("x%%y=%d\n",x%y);  

    return 0;    

}