Thread: Substract 2 date, one is current date

  1. #1
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    Substract 2 date, one is current date

    I know this sounds stupid but I have never dealt with time before, only to generate random numbers in C
    My question is I have current time and a time in the past and I need to calculate the distance/diffence between them (I have exact hour and minute) so need to show time accurate up to minute

  2. #2
    and the hat of int overfl Salem's Avatar
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    Like difftime / mktime in time.h.
    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
    If at first you don't succeed, try writing your phone number on the exam paper.

  3. #3
    Programming Wraith GReaper's Avatar
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    Cool... what's the problem? Just get the difference and divide by 60, like this:
    Code:
    minsPassed = (curTime - prevTime)/60.0;
    Devoted my life to programming...

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