C++ How do compilers handle templates

Question

As some of you may know from my recent posts i am studying for a C++ exam which the content for the class was delivered very poorly. I am basically having to self teach ever

Answer 1

let's say you write a function using templates:

template 
void function(T t){
 doSomething();
}

for each data type you call this function, the compiler simply replaces the 'T' with that data type, say 'int' and generates code for that like you've written this function with 'int' instead of 'T' since the beginning. This is probably the right (but not the complete) answer if others agreed.