need some help (C++/User-Defined Functions)
Write a program to display a menu of 4 options, one for callingeach of the functions you will define and an option to terminatethe program. The menu must be run in a continuous loop providingoptions to choose from. Option 1 calls function 2, option 2 callsfunction 3, and option 3 calls function 4, and option 4 ends theprogram. Choose descriptive function names.
Function 1: An int function todisplay a menu of choices and return the user’s choice.
Function 2: A void functionthat accepts the number of lines as its parameter and the name of afile for writing the
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