I'm kinda lost with step b. From where should I use typedef, enum, and string var for this homework? The language is c++

a. Write a program that uses a random number generator to generate a three-digit integer that allows the user to perform the following operations: 1. Sum the digits 2. Triple the number 3. Reverse the digits b. Use an enum, typedef, and string variable C. Store 10 random numbers in an array d. Sort the array e. Write the array to an external file f. Call a function to read the external file g. Print the array in a function a. Write a program that uses a random number generator to generate a three-digit integer that allows the user to perform the following operations: 1. Sum the digits 2. Triple the number 3. Reverse the digits b. Use an enum, typedef, and string variable C. Store 10 random numbers in an array d. Sort the array e. Write the array to an external file f. Call a function to read the external file g. Print the array in a function