C program to calculate area of a circle using function.

C program to calculate area of a circle.

In this example we will learn to calculate the area of a circle. Here in this program we will use 3.14 as the value of pi. 

• The formula to calculate the area of a circle is:

                                            area= π r²

Flowchart To Calculate the Area of a Circle:

PROGRAM:

#include<conio.h>

#include<stdio.h>

int main()

{

    float radius,area;

    printf("Enter the radius of the circle : ");

    scanf("%f",&radius);

    area=3.14*radius*radius;    

    printf("Area of the circle is : %.2f",area);

    return 0;

}

OUTPUT:

C program to calculate area of a circle using function.

        Here, we will learn how to calculate the area of a circle using function.

Program:

#include<conio.h>

#include<stdio.h>

float circle(float);

int main()

{

    float radius,area;

    printf("Enter the radius of the circle : ");

    scanf("%f",&radius);

    circle(radius);

    return 0;

}

float circle(float r)

{

    float area;

    area=3.14*r*r;    

    printf("Area of the circle is : %.2f\",area);

}

Output:

    

            

NOTE:                        

        You Can post your code in our comment section. Your comment will be approved if your code is different from the code posted above. Thank You.

MOTTO: You Learn, I Learn Together We Learn