Program to Print Area of Circle using Functions.

#include<iostream>
using namespace std;
int main()
{ int a;
void areaofcircle(int);  //Function Prototype
cout<<"\nEnter the Radius:";
cin>>a;
areaofcircle(a);  //Function Call


}
void areaofcircle(int r)   //Function Definition
{
cout<<"\nArea of Circle is:"<<3.14*r*r;
}

By Ayush Gupta, Student