1 #include<stdio.h> 2 #include<math.h> 3 int main() 4 { 5     int x,y,result; 6     char z; 7     while(~scanf("%d %d %c",&x,&y,&z)) 8     { 9     10     if(z==‘+‘)11     result=x+y;12     if(z==‘-‘)13     result=x-y;14     if(z==‘*‘)15     result=x*y;16     if(z==‘/‘)17     result=x/y;18          if(z==‘%‘)19     result=x%y; 20     printf("%d %c %d = %d\n",x,z,y,result);21     22     }23     24 }