c++ passby fucntion (if you dont understand part of the code please domt answer)

Lab 7 Functions Pass by Reference Design and code multiple pass-by-reference functions to solve a single problem Continue to code pass-by-value functions. Code and execute a program that has both types of functions used in it. . Write a main method to: 1.) Set up two values in main, a and b. 2.) read in two variables using a Read function 3.) while (a!-0) 3.1 print two variables using a Print function 3.2 switch the data in the two variables, using a Swap function 3.3 print two variables again using the Print function 3.4 read in two variables using Read Function 4.) stop Code a function that reads in two variables Code a function that prints out two variables with documentation, such as: The first value is" The second value is " Code a function that will switch the values of two memory positions in main Code a main method/function that will accomplish the 4 steps given above. Remember that the data variable names defined in main can be different from the data variable names used in the functions Run: Run this program at least twice once with two integer values and a second time with two floating point values. So how will you define your variables in main? You will need to turn in your source code (.cpp file) in addition to your two outputs. Please submit both files in a zipped folder into D2L See Lab 1's instruction sheet for documentation and further details on how to submit files