c++ Threads inside for loop print wrong values

Question

I\'m trying to understand Multi-threading in c++, but I\'am stuck in this problem: if I launch threads in a for loop they print wrong values. This is the code:

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Answer 1

Another thing :
Do not wait until to have always an ordered sequence: 0, 1, 2, 3, ... because the multithreading execution mode has a specificity: indeterminism.

Indeterminism means that the execution of the same program, under the same conditions, gives a different result.

This is due to the fact that the OS schedules threads differently from one execution to another depending on several parameters: CPU load, priority of other processes, possible system interruptions, ...

Your example contains only 5 threads, so it's simple, try to increase the number of threads, and for example put a sleep in the processing function, you will see that the result can be different from one execution to another .