C++ program , the simpler the code, the better. Thanks

The brightness of a binary star varies as follows. At time t = 0 days its magnitude is 2.5, and it stays at this level until t = 0.9 days. Its magnitude is then determined by the formula 3.355 - In(1.352 + cos(pi(t - 0.9)/0.7)) Until t = 2.3 days its magnitude is then 2.5 until t = 4.4 days, and it is then determined by the formula 3.598 - In(1.998 + cos(pi(t - 4.4)/0.4)) Until t = 5.2. It then remains at 2.5 until t = 6.4 days, after which the cycle repeats with a period of 6.4 days. write a program which will input the value of t and print the brightness of the star at that time. Use the value of pi = 3.14285714. Your program should give the user the option to repeat the process of computing the brightness of star or stop (EXIT) the code. Also, you should use nested if, switch control structure statements in your solution as described in the table below. Your results should be displayed in five decimal places