PI IN C++ WITH CMATH

Sure! Here is an example of how to use the cmath library in C++ to calculate the value of PI:

#include <iostream>
#include <cmath>

int main() {
    double pi = M_PI;
    std::cout << "The value of PI is: " << pi << std::endl;
    return 0;
}

Explanation: - The #include <iostream> statement is used to include the input/output stream library, which allows us to use the std::cout and std::endl statements for printing output to the console. - The #include <cmath> statement is used to include the cmath library, which provides various mathematical functions, including the constant M_PI that represents the value of PI. - The int main() function is the entry point of the program. - The double pi = M_PI; statement declares a variable named pi of type double and assigns it the value of the constant M_PI, which represents the value of PI. - The std::cout << "The value of PI is: " << pi << std::endl; statement prints the value of PI to the console. - The return 0; statement indicates that the program has executed successfully and returns the value 0 to the operating system.

Let me know if you have any further questions.