Почему код не работает

 #include <iostream>  
  
using namespace std;  
  
int main()  
{  
    int a, b, result;  
    char c;  
      
    cout << "introdu 2 numere: ";  
    cin >> a >> b;  
      
    cout << "introdu un simbol: ";  
    cin >> c;  
      
    switch (c) {  
    case '+': result = a + b; break;  
    case '-': result = a - b; break;  
    case '*': result = a * b; break;  
    case '/': result = a / b; break;  
    default:  
        cout << "nu exista asa raspuns" << '\n';  
        return -1;  
    }  
      
    cout << a << " " << c << " " << b;  
    cout << " = " << result << '\n';  
    return 0;  
}  

// introdu 2 numere: 3 5 
// introdu un simbol: * 
// 3 * 5 = 15