demourp.cpp

#include <iostream>

using std::cout;
using std::endl;

class Increment {
    
public:
    Increment( int c = 0, int i = 1 );  // default constructor
    
    void addIncrement()
    {
        count += increment;
        
    } // end function addIncrement
    
    void print() const;     // prints count and increment
    
private:
    int count;
    const int increment;    // const data member
    
}; // end class Increment

// constructor
Increment::Increment( int c, int i )
: count( c ),     // initializer for non-const member
increment( i )  // required initializer for const member
{
    // empty body
    
} // end constructor Increment

// print count and increment values
void Increment::print() const
{
    cout << "count = " << count
    << ", increment = " << increment << endl;
    
} // end function print

int main()
{
    Increment value( 10, 5 );
    
    cout << "Before incrementing: ";
    value.print();
    
    for ( int j = 0; j < 3; j++ ) {
        value.addIncrement();
        cout << "After increment " << j + 1 << ": ";
        value.print();
    }
    
    return 0;
    
} // end main