c++ change function's variable argument

Question

i want to change my variable passed as argument to this function:

bool verifyStudent(string id, string name, int grade, int points, string type) {
if(!verify         


        

Answer 1

Quote:

Therefore, C++ has two parameter passing mechanisms, call by value (as in Java) and call by reference. When a parameter is passed by reference, the function can modify the original. Call by reference is indcated by an & behind the parameter type.

Here is a typical function that takes advantage of call by reference [...]

void swap(int& a, int& b) { [...] }

More here -> A3.5. Functions