Area of circle using function

C program to find area of circle using function :

code

#include<stdio.h>
#include<conio.h>
void area();
void main()
{
clrscr();
area();
getch();
}
void area()
{
float area,rad,pi=3.14;
printf(“Enter radius of circle :”);
scanf(“%f”,&rad);
area=(pi*rad*rad);
printf(“Area of circle is %f”,area);
return 0;
}

 


output

Enter radius of circle :2

Area of circle is 12.56

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