creating a program to execute another

[kenner]

I'm attempting to make a program that will replace file information before running another, to prevent others from modifying them before use.

How it will work is they will run an updater, which will then execute the program, which will replace the text in the files and then execute y.exe

I have enough knowledge in c++ to do everything except make the c++ program execute y.exe

I'm in a college class that teaches the structured c++ programming, but not OOP (which i find ridiculous since that's the power of the language...). Can anyone give me a hand on how to pull this off?


Edit:

Nevermind, after some research I found it can be done with a cmd line:

system("LOADFIX \y");