__C Program to find out the area of a circle__
This is a C program to find out area of a circle. It will be
useful to the beginners of C programming. In this example, it takes the

**radius**of the circle as input to the program, calculates the**area**using the formula**PI * r * r**and prints the result.

__See the source code of the program__
/*

Program to find out the area of a
circle

input : raduis

output : area

*/

# include
<stdio.h>

# define PI
3.14

void main () {

float r, area;

clrscr();

printf ("\nInput\n\n");

printf ("Enter radius of the
circle:");

scanf ("%f", &r);

area = PI * r * r;

printf ("\nOutput\n\n");

printf("Area of the circle
is:%.2f", area);

printf("\n\nPress any key to
continue...");

getch();

}

__Output__
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