A program to read radius and calculate circumference of a circle

C Programming Language 103

Write a program to read radius and calculate circumference of a circle

Program

#include <stdio.h>
#define PI 3.14

void main()
{
    float circum, radius;
    printf("Enter radius: ");
    scanf("%f", &radius);

    circum = PI * 2 * radius;
    printf("Circumference is %f", circum);
    printf("\n");
}

Result

Enter radius: 1
Circumference is 6.280000

Enter radius: 3
Circumference is 18.840000

Last Updated on Nov 13, 2022

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