Question

Write a program in C++ to find area of circle using parameter concept.​

Answer 1

Answer:

#include <iostream>

using namespace std;

//function declaration

float areaOfCircle(float radius_circle);

int main() {

float radius;

// take radius as input

cout << "Enter the radius of circle: ";

cin >> radius;

cout << "Area of circle: " << areaOfCircle(radius) << endl;

return 0;

}

// function definition to calculate area of circle

float areaOfCircle(float radius_circle)

{

float area_circle;

area_circle = 3.14 * radius_circle * radius_circle;

return area_circle; //return area

}