C Tutorial
Circumference of a Circle = 2 * π * radius
This C program gets radius as user inputs and computes the circumference of a circle.
#include<stdio.h> void main() { int radius; float circumference=0; printf("\nFinds circumference of circle\n-------------------"); printf("\nEnter radius: "); scanf("%d", &radius); circumference = 2*3.14*radius; printf("Circumference of Circle: %.2f", circumference); }Output:
$ cc circumference-of-circle.c $ ./a.out Finds circumference of circle ------------------- Enter radius: 8 Circumference of Circle: 50.24
Circumference of a Semi-circle = π * radius
This C program gets radius as user inputs and computes the circumference of a semi-circle.
#include<stdio.h> void main() { int radius; float circumference=0; printf("\nFinds circumference of semi-circle\n-------------------"); printf("\nEnter radius: "); scanf("%d", &radius); circumference = 3.14*radius; printf("Circumference of Semi-circle: %.2f", circumference); }Output:
$ cc circumference-of-semi-circle.c $ ./a.out Finds circumference of semi-circle ------------------- Enter radius: 8 Circumference of Semi-circle: 25.12
C Tutorial
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