case

case

#include <iostream>
using namespace std;
int main(){
    double a,b;
    cin >> a >> b;
    char n;
    cin >> n;
    switch(n){
        case '+':printf("%.1lf",a+b);break;
        case '-':printf("%.1lf",a-b);break;
        case '*':printf("%.1lf",a*b);break;
        case '/':
            if(b!=0){
                printf("%.1lf",a/b);
                break;
            }
            else cout << "Divided by zero!";break;
        default:
            cout << "Invalid operator!";

    }
    return 0;
}