01: #include <iostream>
02: 
03: using namespace std;
04: 
05: int main()
06: {  
07:    double sum = 0;
08:    int count = 0;
09:    bool more = true;
10:    double salary = 0;
11:    while (salary != -1)
12:    {  
13:       cout << "Enter a salary, -1 to finish: ";
14:       cin >> salary;
15:       if (salary != -1) 
16:       {  
17:          sum = sum + salary;
18:          count++;
19:       }
20:    }
21:    if (count > 0)
22:       cout << "Average salary: " << sum / count << "\n";
23:    return 0;
24: }