Question

Write a program to find the area of a circle by taking radius as input from the user

Answer 1

Answer:

STEP 1: Take radius as input from the user using std input. STEP 2: Calculate the area of circle using, area = (3.14)*r*r STEP 3: Print the area to the screen using the std output.

Answer 2

Answer:

C program:

#include <stdio.h>

#define PI 3.14

int main()

{

int radius;

float area;

printf("Enter radius: \n");

scanf(" %d", &radius);

area = PI *radius *radius:

printf("Area of circle = %f,area);

return 0;

}

Output:

Enter radius:

4

Area of circle = 50.240002