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.