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Question

What is the output of this program? 
    #include <iostream>
    using namespace std;
    #define PI 3.14159
    int main ()
    {
        float r = 2;
        float circle;
        circle = 2 * PI * r;
        cout << circle;
        return 0;
    }

a.

12.5664

b.

13.5664

c.

10

d.

compile time error

Posted under Object Oriented Programming Using C++

Answer: (a).12.5664

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