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c++ millisecond timer

Thinking of how to make C++ in Milisecond timer? he challenge is, how can we calculate speed of our function in C++ when they might only take a couple of milliseconds? An execution time of one hundred milliseconds sounds fast – but it’s not great when that routine has to be called many thousands of times. Here the best way is calling the same function n times. i.e. 1000 or 1 Million times, so we can exactly calculate the speed of that function. This may help us to improve our functions, algorithms and / or methods to use.

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