area of circle

 5.program to accept value of radius and print area of a circle. 

 #include<stdio.h>

#include<conio.h>

void main()

{

  float area,radius;

  clrscr();

  printf("Enter Radius:");

  scanf("%f",&radius);

  area=3.14*radius*radius;

  printf("Area : %f",area);

  getch();

}