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Next: Example Program: Pythagorean Triples Up: The if-else Statement Previous: Examples of if-else statements

Example Program: Wages Calculation

In Lesson 5 an algorithm was developed to calculate wages depending on hours worked and on whether any overtime had been worked. This can now be written in C++. The program is listed below:

// IEA 1996
// Program to evaluate a wage

#include <iostream.h>

void main()
{
  const float limit = 40.0,
              overtime_factor = 1.5;
  float hourly_rate,   // hourly rate of pay
        hours_worked,  // hours worked
        wage;          // final wage
    // Enter hours worked and hourly rate
  cout << "Enter hours worked: ";
  cin >> hours_worked;
  cout << "Enter hourly_rate: ";
  cin >> hourly_rate;
    // calculate wage
  if (hours_worked <= limit)
    wage = hours_worked * hourly_rate;
  else
    wage = (limit + (hours_worked - limit) * overtime_factor)
             * hourly_rate;
    // Output wage
  cout << "Wage for " << hours_worked
       << " hours at " << hourly_rate
       << " is " << wage
       << endl;
}

Download program.

Note that this program contains the minimal amount of comment that a program should contain. Comments have been used to:

indicate who wrote the program, when it was written and what it does.
describe the main steps of the computation.
indicate what the program variables represent.

Also note how constants have been used for the number of hours at which the overtime weighting factor applies and the weighting factor itself. Hence if subsequent negotiations change these quantities the program is easily changed.

Next: Example Program: Pythagorean Triples Up: The if-else Statement Previous: Examples of if-else statements