C++ hjälp

1: #include <iostream> 
2:  
3: int main() 
4: { 
5:         using namespace std; 
6:  
7:         int tal1, tal2, summa; 
8:         //char tecken[31]; 
9:         char tecken; 
10:  
11:         cout << "Detta är en mycket enkel miniräknare!\n";                  
12:         cout << "Var god mata in ditt första tal:\n"; 
13:         cin >> tal1; 
14:  
15:         cout << "Var god mata in +, -, * eller /!\n"; 
16:         cin >> tecken; 
17:  
18:         cout << "Var god mata in ditt andra tal:\n"; 
19:         cin >> tal2; 
20:  
21:         switch(tecken) { 
22:                 case '+': 
23:                         cout << "Summan är: " << (tal1 + tal2) << endl; 
24:                         break; 
25:  
26:                 case '-': 
27:                         cout << "Differensen är: " << (tal1 - tal2) << endl; 
28:                         break; 
29:  
30:                 case '*': 
31:                         cout << "Produkten är: " << (tal1 * tal2) << endl; 
32:                         break; 
33:  
34:                 case '/': 
35:                         cout << "Kvoten är: " << (tal1 / tal2) << endl; 
36:                         break; 
37:  
38:                 default: 
39:                         cout << "Ogiltig operand: " << tecken << "!" << endl; 
40:         } 
41:  
42:         cin.get(); 
43:         cin.get(); 
44:  
45:         return 0; 
46: }