i need help with coding and where the code goes .h, .cpp, test.cpp and main.cpp

Implementation In the header file, write a string value return function prototype get_factorial_sequence with an int parameter. In the cpp file, write the code to return the factorial sequence for the int parameter value. Example: get_factorial_sequence(5) returns 12345=120 Test Cases Use the table below to write the test case to test every option in the Points Earned table above. Main Program Flow The program flow is as follows: 1) Prompt user for a number. a-Validate that the number is in the range of 1 to 10 2) Pass the number to the get_factorial_sequence function, save the return value to a variable in main. 3) Display the factorial sequence 4) The program will loop until user wants to exit