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I am making a simple PI calculator and need help. Im new


Well i need some help with this program.

#include <iostream>
#define PI 3.14

int main()

     //Simple PI Calculator
    float radius;
    float no;
    float yes;

    std::cout << "Enter circle radius: ";

    std::cin >> radius;
        float circle_area = PI * radius;

    std::cout << "Circle's radius: " << circle_area << std::endl;

    std::cout << "Would you like to enter another PI calculation?" << std::endl;
        return 0;

Can some one help with this? I want it so if you say yes it will pretty much start the program all over again. And if you press no it will close it.

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