Answer:
Global Variables
Step-by-step explanation:
A Global variable is a variable defined usually in the header that can be accessed by any part in a program.
However, this is not a good practice because anything in the program can modify the value of the variable; also, helps to get more difficult to read a code, due to the fact that you need to know where are those variables and where they have been modified.
Example en c++: Check that the final result its 10, it is not necessary to pass the variable as a parameter in functions
#include <iostream>
int varGlobal = 5; // this is the global variable
void ChangeVarGlobal()
{
varglobal=10; // reference to the variable
}
void main()
{
std::cout << global << '\\'; // reference to a variable in a second function
ChangeVarGlobal();
std::cout << global << '\\';
return 0;
}