CS256 - Principles of Structured Design Fall 2021

Displaying ./code/cs256su21code/jun08/circle.c

/*

we've combined our area and circumference programs into one program
we also made functions for finding the area and circumference of the circle


*/


#include <stdio.h>

//note that since i've defined my functions above main, i dont need to write 
//a function declaration here

double areaCircle(int r){

	double ar;
	
	ar = 3.14159 * r * r;

	return ar;

}

double circumCircle(int r){

	double cir;

	cir = 2* 3.14159 * r;

	return cir;

}


int main(){

	int radius;

	printf("Enter the radius: ");
    scanf("%d", &radius); 

    double area, circumference;

    area = areaCircle(radius);

    circumference = circumCircle(radius);

    printf("Radius of Circle: %d\n", radius);
    printf("Area: %f, Circumference: %f\n", area, circumference);

    return 0;

}