#include
using namespace std;
int main()
{
double a,b;
char ch;
scanf(“%d%d%c”,a,b,ch);
if(ch==‘+’)
printf(“%d”,a+b);
break;
if(ch==‘-’)
printf(“%d”,a-b);
break;
if(ch==‘’)
printf(“%d”,ab);
break;
if(ch==‘/’&&b=!0)
printf(“%d”,a/b);
else
printf(“Divided by zero!”);
break;
default:printf(“Invalid operator!”)
return 0;
}