Thread: Do "Sleep()" exists in C Language?

  1. #1
    Registered User
    Join Date
    Sep 2003

    Do "Sleep()" exists in C Language?

    Perhaps I am asking a silly question, but I really don't know about it. Can anyone tell me the function for "sleep" kind of functionality in C language for Unix. I don't think any function with the name of sleep() exits in Unix's C language. or perhaps I am not known with the header file required for this. Can anyone guide me about the correct function to halt the program execution for a specified time? Do tell me the header file required for the function as well.


  2. #2
    Guest Sebastiani's Avatar
    Join Date
    Aug 2001
    Waterloo, Texas
    I don't think there is (correct me if I'm wrong). The usual hack is:

    #include <time.h>
    void wait(unsigned timeout)
     timeout += clock(); 
     while(clock() < timeout)
    #include <cmath>
    #include <complex>
    bool euler_flip(bool value)
        return std::pow
            std::complex<float>(0, 1) 
            * std::complex<float>(std::atan(1.0)
            *(1 << (value + 2)))
        ).real() < 0;

  3. #3
    Join Date
    Aug 2001
    Groningen (NL)
    There is no sleep function in standard C, but your OS may provide such a function. What OS are you using? In case of a Unix-like OS there is function sleep(), it's part of the POSIX standard, you need to include unistd.h for that.

  4. #4
    End Of Line Hammer's Avatar
    Join Date
    Apr 2002
    When all else fails, read the instructions.
    If you're posting code, use code tags: [code] /* insert code here */ [/code]

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