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C Program to find area of Circle (Use Constant)

Get radius of circle and find area of circle.

Sample Input 1:

4

Sample Output 1:

50.24

Program or Solution

					    
							
#include<stdio.h>

int main()

{
    
	const float pi=3.14;
	int radius;
	float area;
	printf("Enter Radius:");
    
	scanf("%d",&radius);

	area=pi * (radius * radius);
    
	printf("Area of Circle: %.2f",area);
    
	return 0;

}
					    
					

Program Explanation

Get radius of a circle (using scanf statement)

Calculate area by multiplying pi and radius and radius (area =pi*radius*radius) (pi is 3.14 , global constant) print area (using printf statement)