running time

This is a discussion on running time within the C++ Programming forums, part of the General Programming Boards category; how can be the running time calculated of a function ?what will be the header file?...

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    Question running time

    how can be the running time calculated of a function ?what will be the header file?

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    Linguistic Engineer... doubleanti's Avatar
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    you can use ftime. and the timeb structure. in time.h
    hasafraggin shizigishin oppashigger...

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    geek SilentStrike's Avatar
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    Do you mean actual time? Or the concept of complexity analysis (Big O)?
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    actyal

    i want to calculate actual run time.

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    Skunkmeister Stoned_Coder's Avatar
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    If you are on a windows os including a console program then go to msdn and search for QueryPerformanceCounter()
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    Linguistic Engineer... doubleanti's Avatar
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    ahem... [hasafraggin cookies]

    strickly speaking, ftime wouldn't actually give you the runtime of a function [as if you put the the function's address as a parameter]. but rather it's such that you'd get the runtime of the processor since 1980, which you could poll twice and take the difference at both ends of your function's execution.
    hasafraggin shizigishin oppashigger...

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