Question

I’m writing code in Visual C++ and I need to use a global variable. I know it’s generally not a good idea, but in this case, it is necessary. I have created the variable and it is accessible from the function that needs it, but I can’t figure out how to give it an initial value.

in the .h file it looks like

extern int lversion;

and in the .cpp file it looks like

int lversion;

How can I give this variable an initial value of 0?

Answer 1

The variable does have initial value 0 as it is. Globals and statics are value-initialized unless otherwise specified. (for an int, it will be 0)

If you want any other value, you can specify it:

In the cpp file:

int lversion= 3;

or

int lversion(3);

but for a value of 0 there’s no point being this verbose.