Area of Circle Program In C

C program to find area of circle, In this program we will learn how to write area of circle program in c by using the concept of concept and formula of area of circle.

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Area of Circle Program In C

#include<stdio.h>

void main(){

    const float pi = 3.14;
    float r;
    printf("Enter the value of radius: ");
    scanf("%f",&r);

    float area;
    area = pi* r * r;
    printf("The area of the circle is %.2f", area);
}

Area of Circle Program In C By Using Function

#include<stdio.h>

float area(float r){
    const float pi = 3.14;
    float area;
    area = pi* r * r;
    return area;
}

void main(){
    float r;
    printf("Enter the value of radius: ");
    scanf("%f",&r);
    printf("The area of the circle is %.2f", area(r));
}

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