• • Circumference Calculator • • 
#include <iostream>
using namespace std;
int main()
{
    int r, c;
    double pi= 3.14;
cout<<"Circumference Calculator\n";
cout<<"Enter the value of Radius\n";
cin>> r;
c= (2*pi)*r;
cout<<" The Circuference of the Circle is:"<< c;
return 0;
}
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