Passing Global Variables in C++

Question

Can we pass the address of global variables in C++(pass by reference) .Will it affect the actual value of the variable?

Answer 1

There is no need to pass a global variable. You can directly alter the value of a global variable in any existing function.

Answer 2

#include <iostream>
int y = 10;

void test(int& num)
{
num = 11;
}

int main()
{
test(y);
std::cout << y;

return 0;
}

// outputs 11

Answer 3

but if we do will the value be altered

Answer 4

thanks bro