Question

When the user has finished entering the sales amounts, the program should display the number of sales amount entered and the average commission.

#include <iostream>
using namespace std;

int main() {

const double rate =0.2;
int sales = 0;
double commission = 0.0;
double totalSales =0.0;

cout << "First salesperson's sales (-1 to stop) : ";
cin >> sales;
while (sales !=-1)
{
commission = sales * rate;

cout << "Commission : $ " << commission << endl;
cout << "Next salesperson's sales (-1 to stop) : ";
cin >> sales;

}
  
   return 0;
}

Answer 1

#include <iostream>
using namespace std;

int main() {

const double rate =0.2;
double sales = 0;
int count=0;
double commission = 0.0;
double totalSales =0.0;

cout << "First salesperson's sales (-1 to stop) : ";
cin >> sales;
while (sales !=-1)
{
   count++;
   commission+=sales*rate;
   cout << "Next salesperson's sales (-1 to stop) : ";
   cin >> sales;
}
cout<<"Number of sales amount entered : "<<count<<endl;
cout << "Average Commission : $ " << commission/count << endl;
return 0;
}

// If any doubt please comment