TASK-
Write a c program to find the area of circle with formula as below
Area of the Circle = πr2
In which declare π as a global variable, and make a function of area_of_cirlce and pass the value of r to the function and print.
CODE:
#include<stdio.h>
void area_of_circle(float r);
float p=3.14; //value of pie is declared as globle variable
int main(){
float rad;
printf("Enter the radius of circle: ");
scanf("%f",&rad);
area_of_circle(rad); //calling the function
getchar();
return 0;
}
void area_of_circle(float r)
{
float area;
area=(p)*r*r; //Formula of area of circle
printf("\n\n The area_of_circle with %0.2f radius is %0.2f",r,area);
}
Expected Output:
