Summary: in this tutorial, you will learn about C variables that allow you to manipulate data in your program. A variable is a meaningful name of data storage location in computer memory. When using a variable, you refer to a memory address of computer.
Overheating of the CPU caused by a temperature problem is definitely a bad sign as it can destroy the processor and can cause instabilities in the hardware of the system. This can lead to it rebooting as well.
In most occasions,you can request that your mechanic perform a Block test to ensure their hasn't been any major damage done to your engine, BEFORE you decide to repair the causes of overheating (rubber hose,thermostat,water pump,radiator,cooling fan etc). Sometimes their is no choice ,but to repair the causes first.