include前面缺了#，include后面缺少<stdio.h>

直接填结果就行了

你大写了

#include<stdio.h>

int main()

 {

    int x,y; 

    x = 10;    y = -3; 

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;

    }