In C++ a reference parameter is declared with the syntax:
A) dataType referenceName
B) dataType* referenceName

Question

Quizplus · Accepted Answer

A reference parameter is declared with an ampersand (&) following the data type, for example "int& parameter". It is not declared with a pointer (*) syntax like option B. Therefore, the correct syntax would be A. Using a reference parameter allows the function to modify the value of the original variable passed in, without making a copy of the value. This can improve performance and memory usage. A reference parameter is declared using the "&" symbol after the data type. This means that the parameter is not a copy of the argument passed in, but instead refers directly to the same memory location. Using a pointer would achieve a similar effect, but requires dereferencing the pointer to access the underlying value, which can introduce potential errors if not done correctly. Using a reference parameter is generally considered more idiomatic in modern C++ code.

In C++ a Reference Parameter Is Declared with the Syntax