Need help with this C++ code!

PI.CPP Write a C++ program that approximates the value of the constant r, based on the Leibniz formula for TL. The formula is shown in the image below: 4 Put another way, the formula can be written as: pi-4.[1-1/3 1/5-1/7+19...1 A n)/(2n+1)1 The Leibniz formula works well for high values of n. The program takes an input from the user for the value of n, which determines the number of terms in the approximation of the value of pi. The program then outputs that calculation. You must also include a loop that allows the user to repeat this calculation for new values n until the user says she or he wants to end the program by issuing an input of 0. The program should print a string of text to the terminal before getting each piece of input from the user. A session should look like the following example (including whitespace and formatting), with various and different inputs and numbers in the output