C Programming. Program to find area and circumference using function.

 Program to find area and circumference using function.

// Program to find area and circumference using function

#include <stdio.h>

float Area(int);

float Circ(int);

int main()

{

    int r;

    float area, circ;

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

    scanf("%d", &r);

    area = Area(r);

    circ = Circ(r);

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

    printf("\nThe circumference of the circle is : %.2f", circ);

    return 0;

}

float Area(int r)

{

    float area = 3.141 * r * r;

    return area;

}

float Circ(int r)

{

    float circ = 2 * 3.141 * r;

    return circ;

}

Output :

Enter the radius of a circle : 5 The area of the circle is : 78.53 The circumference of the circle is : 31.41