Простой такой калькулятор

#include <iostream>
using namespace std;
int main(){
    float a, b;
    char op;
    bool exit = false;
    while(true){
        cout << "Enter What do You want:";
        cin >> control;
        if(control == 'n' || control =='N')
        cin >> a >> op >> b;
        
        switch(op){
            case '+': cout << a << "+" <<b<< "=" << (a+b) << endl;break;
            case '-': cout << a << "-" <<b<< "=" << (a-b) << endl;break;
            case '*': cout << a << "*" <<b<< "=" << (a*b) << endl;break;
            case '/': cout << a << "/" <<b<< "=" << (a/b) << endl;break;
            default: cout << "WTF!!!" <<endl;
        }
        else if(control == 'q' || control == 'Q')
        break;
        cout << "Can't understand You" << endl;
    }
    return 0;
}

#include <iostream>
using namespace std;
 
int main()
{
float a, b;
char op, control;
bool exit = false;
 
while(true)
{
cout << "Enter What do You want:";
cin >> control;
if(control == 'n' || control =='N')
{
 
cin >> a >> op >> b;
 
switch(op)
{
case '+': cout << a << "+" <<b<< "=" << (a+b) << endl;break;
case '-': cout << a << "-" <<b<< "=" << (a-b) << endl;break;
case '*': cout << a << "*" <<b<< "=" << (a*b) << endl;break;
case '/': cout << a << "/" <<b<< "=" << (a/b) << endl;break;
default: cout << "WTF!!!" << endl;
}
}
else
  if(control == 'q' || control == 'Q')
    break;
  else
    cout << "Can't understand You" << endl;
}
 
return 0;
}//main