Add inline member function to change member field value - C++ Class

C++ examples for Class:Member Function

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Description

Add inline member function to change member field value

Demo Code

                                                                                                                    
#include <iostream>
#include <cmath>
using namespace std;
// declaration section
class Complex/*from  ww w  .j av  a2s  .  c o m*/
{
   private:
   double realPart;       // declare realPart as a double variable
   double imaginaryPart;   // declare imaginaryPart as a double variable
   public:
   Complex(double = 0.0, double = 0.0);  // constructor prototype
   void showComplexValues();             // accessor prototype
   void assignNewValues(double real, double imag)  // inline mutator
   {realPart = real; imaginaryPart = imag;}
   double amplitude()
   {
      return (sqrt(pow(realPart,2) + pow(imaginaryPart,2)));
   }
};   // end of class declaration
// implementation section
Complex::Complex(double real, double imag)  // constructor
{
   realPart = real;
   imaginaryPart = imag;
   cout << "Created a new complex number object.\n";
}
void Complex::showComplexValues()  // accessor
{
   char sign = '+';
   if (imaginaryPart < 0) sign = '-';
   cout << realPart << ' ' << sign << ' ' << abs(imaginaryPart) << 'i';
}
int main()
{
   Complex complexOne(3.0, 4.0);  // declare a variable of type Complex
   cout << "The value assigned to this complex object is ";
   complexOne.showComplexValues();
   cout << "\n\nThe amplitude of this complex number is " << complexOne.amplitude() << endl;
   return 0;
}

Result


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