global variables in multithreaded programming

[unregistered]

Is there a way to avoid the use of global variables in a multithreaded c/c++ program since using global variables are bad practice?

[helios]

Yes. Not declaring them.

[unregistered]

how do I then deal with shared data among the different threads?

[helios]

By passing pointers when the threads are created. As usual, all data that can be accessed asynchronously should be locked.

[unregistered]

so I lock the pointers associated with the data item?

[helios]

Not the pointer, the data itself.