How can I make a variable global from another source file

[RandomGeek]

Hello, how can I make a variable global like for example i have a variable int num =1, it is in numbers.cpp , but I want to transfer it or make it global to main.cpp .. Is this possible,if it is, can someone somehow give an example or help me do it? Thanks in advance.

[Thomas1965]

Have a look at this tutorial.

http://www.learncpp.com/cpp-tutorial/42-global-variables/

[Kevin C]

In main.cpp, add (in a global scope, somewhere near the top of the file):

extern int num;