C program to Find area of Circle

In this program, the user is asked to enter radius of circle and the area of circle is calculated and the area is display displayed on console.

Source Code

#include<iostream>
using namespace std;

int main()
{
    float radius, area;
    cout<<"Enter radius of circle: ";
    cin>>radius;

    area = 3.14 * radius * radius;
    cout<<"Area of circle = "<<area;
    return 0;
}

Output

Enter radius of circle: 5.7
Area of circle = 102.0189