This topic is about D Programming – Class member functions.
A member function is a function specific to a class. It operates on any object of the class of which it is a member, and has access to all the members of a class for that object.
A member function is called using a dot operator (.) on a object where it manipulates data related to that object.
Let us put above concepts to set and get the value of different class members in a class −
import std.stdio;
class Box {
public:
double length; // Length of a box
double breadth; // Breadth of a box
double height; // Height of a box
double getVolume() {
return length * breadth * height;
}
void setLength( double len ) {
length = len;
}
void setBreadth( double bre ) {
breadth = bre;
}
void setHeight( double hei ) {
height = hei;
}
}
void main( ) {
Box Box1 = new Box(); // Declare Box1 of type Box
Box Box2 = new Box(); // Declare Box2 of type Box
double volume = 0.0; // Store the volume of a box here
// box 1 specification
Box1.setLength(6.0);
Box1.setBreadth(7.0);
Box1.setHeight(5.0);
// box 2 specification
Box2.setLength(12.0);
Box2.setBreadth(13.0);
Box2.setHeight(10.0);
// volume of box 1
volume = Box1.getVolume();
writeln("Volume of Box1 : ",volume);
// volume of box 2
volume = Box2.getVolume();
writeln("Volume of Box2 : ", volume);
}
When the above code is compiled and executed, it produces the following result −
Volume of Box1 : 210 Volume of Box2 : 1560
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