Search:

Here is the whole code that I used to test the CountContact function


#include <iostream>
#include <string>
#include <vector>

void CountContact(const std::vector<std::string>& contacts);
...

when you need to modify object the pass by reference is only reasonable choice.

When you do not need to modify object - you can pass by const reference or by value...

For small types (let's say...

I would get rid of the global variable and pass the vector by reference or const reference to each function that should access it

for example



void CountContact(const...