We are learning about the following things by this example:
- Classes in C++
- Constructors
- Parameterized Constructors
- Generic Data Input
Task Example:
QUESTION:
Create a class named Cube having the following attributes:
1.
length(double)
2.
Base (double)
3.
height (double)
• Write a function input () that takes input from the user.
• Write a non-returning display () function to print.
• Write an inline function calculate volume() which calculates the
volume of the cube.
Solution
#include <iostream>
using namespace std;
class Cube
{
private:
double length, width, height;
public:
Cube()
{
length = 0.0;
width = 0.0;
height = 0.0;
}
Cube(double ln, double wd, double ht)
{
length = ln;
width = wd;
height = ht;
}
void Setlength(double ln)
{
length = ln;
}
void Setwidth(double wd)
{
width = wd;
}
void Setheight(double ht)
{
height = ht;
}
double Getlength()
{
return length;
}
double Getwidth()
{
return width;
}
double Getheight()
{
return height;
}
inline void display()
{
double volume;
volume = length*width*height;
cout << "Volume of Cube is: " << volume << endl;
}
~Cube() //destructor
{
}
};
int main()
{
double a, b, c;
cout << "Enter Length: ";
cin >> a;
cout << "Enter Width: ";
cin >> b;
cout << "Enter Height: ";
cin >> c;
Cube obj;
obj.Setlength(a);
obj.Setwidth(b);
obj.Setheight(c);
obj.display();
system("Pause");
return 0;
}
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