5. Write a function called set_byte. It is passed 3 parameters: a pointer to an unsigned long x, an index i, and a new value v for the byte. The function should change the ith byte of x to v. Byte 0 is x's least significant byte; byte 1 is the next least significant byte, etc.; byte 7 is x's most significant byte. You may only use the constants 0-255 in this function, and must restrict yourself to the the assignment operator, the dereferencing operator, multiplication, bitwise operators and shift operators.

Write a program that keeps asking the user for new values to be added to a list until the user enters 'exit' ('exit' should not be added to the list). these values entered by the user are added to a list we call 'initial_list'. then write a function that takes this initial_list as input and returns another list with 3 copies of every value in the initial_list. finally, inside print out all of the values in the new list. for example: input: enter value to be added to list: a enter value to be added to list: b enter value to be added to list: c enter value to be added to list: exit output: a b c a b c a b c note how 'exit' is not added to the list. also, your program needs to be able to handle any variation of 'exit' such as 'exit', 'exit' etc. and treat them all as 'exit'.