C++ Program to Find Area of Shapes using Function Overloading

C++ allows you to specify more than one definition for a function name or an operator in the same scope, which is called function overloading and operator overloading respectively.

Function overloading : :

You can have multiple definitions for the same function name in the same scope. The definition of the function must differ from each other by the types and/or the number of arguments in the argument list. You can not overload function declarations that differ only by return type.

Operators overloading : :

You can redefine or overload most of the built-in operators available in C++. Thus a programmer can use operators with user-defined types as well.

Overloaded operators are functions with special names the keyword operator followed by the symbol for the operator being defined. Like any other function, an overloaded operator has a return type and a parameter list.

Below is the source code for C++ Program to Find Area of Shapes using Function Overloading which is successfully compiled and run on Windows System to produce desired output as shown below :

SOURCE CODE : :

/* C++ Program to Find Area of Shapes using Function Overloading */

#include<iostream>
using namespace std;
class measure
{
        public:
                void shape(int r);
                void shape(int l,int b);
                void shape(float t,int d,int e);
                void shape(long a);
                void shape(float c, long int g);
                void shape(double j);
                void shape(float h, double f);
};
void measure::shape(int r)
{
        cout<<"area of the circle is "<<3.14*r*r;
}
void measure::shape(int l,int b)
{
        cout<<"area of the rectangle is"<<l*b;
}
void measure::shape(float t,int d,int e)
{
        cout<<"area of the triangle is"<<t*d*e;
}
void measure::shape(long a)
{
        cout<<"area of the square is"<<a*a;
}
void measure::shape(float c, long int g)
{
        cout<<"Volume of the cone is "<<(1/3)*3.14*c*c*g;
}
void measure::shape(double j)
{
        cout<<"Volume of the sphere is "<<(4/3)*3.14*j*j*j;
}
void measure::shape(float h, double f)
{
        cout<<"\nVolume of the Cylinder is "<<3.14*f*f*h;
}
int main()
{
        int r,d,e,l,b;
        float t,c,h;
        long a;
        int ch;
        double j,f;
        long int g;
        measure obj;
        cout<<"\tCALCULATION OF AREA AND VOLUME";
        cout<<"\n\n1. area of circle";
        cout<<"\n2. area of rectangle";
        cout<<"\n3. area of triangle";
        cout<<"\n4. area of square";
        cout<<"\n5. Volume of the cone";
        cout<<"\n6. Volume of the sphere";
        cout<<"\n7. Volume of the cylinder";
        cout<<"\n\tEnter your choice ";
        cin>>ch;
        switch(ch)
        {
                case 1:
                        cout<<"enter the value of radius of the circle \n";
                        cin>>r;
                        obj.shape(r);
                        break;
                case 2:
                        cout<<"enter the sides of rectangle \n";
                        cin>>l>>b;
                        obj.shape(l,b);
                        break;
                case 3:
                        cout<<"enter the sides of triangle \n";
                        cin>>d>>e;
                        obj.shape(0.5,d,e);
                        break;
                case 4:
                        cout<<"enter the sides of square";
                        cin>>a;
                        obj.shape(a);
                        break;
                case 5:
                        cout<<"\nEnter the radius of the cone";
                        cin>>c;
                        cout<<"\nEnter the height of the cone";
                        cin>>g;
                        obj.shape(c,g);
                        break;
                case 6:
                        cout<<"\nEnter the radius";
                        cin>>b;
                        obj.shape(b);
                        break;
                case 7:
                        cout<<"\nEnter the radius";
                        cin>>f;
                        cout<<"\nEnter the height";
                        cin>>h;
                        obj.shape(h,f);
                        break;
                default:
                        cout<<"\nThe choice entered is a wrong choice";
        }
        return 0;
}

OUTPUT : :

/* C++ Program to Find Area of Shapes using Function Overloading */

        CALCULATION OF AREA AND VOLUME

1. area of circle
2. area of rectangle
3. area of triangle
4. area of square
5. Volume of the cone
6. Volume of the sphere
7. Volume of the cylinder

        Enter your choice 1
enter the value of radius of the circle 3

area of the circle is 28.26

Process returned 0

Above is the source code and output for C++ Program to Find Area of Shapes using Function Overloading which is successfully compiled and run on Windows System to produce desired output.