Timer help

This is a discussion on Timer help within the C++ Programming forums, part of the General Programming Boards category; Help! I jut started learning CPP and i know how to use the STD::STRING and all before, well almost, but ...

  1. #1
    Blizzarddog
    Guest

    Question Timer help

    Help! I jut started learning CPP and i know how to use the STD::STRING and all before, well almost, but i heard a command called delayed(1) to make the computer wait for one second before continuing. I know it is c programming, so it should work in c++ right? I keep getting 'delayed' undeclared.
    email me at hogarth@chestertel.com

  2. #2
    Guest Sebastiani's Avatar
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    For Windows machines, you can include windows.h and use Sleep(unsigned long duration). For console apps,you can make your own using the clock() function from time.h.
    Code:
    #include <cmath>
    #include <complex>
    bool euler_flip(bool value)
    {
        return std::pow
        (
            std::complex<float>(std::exp(1.0)), 
            std::complex<float>(0, 1) 
            * std::complex<float>(std::atan(1.0)
            *(1 << (value + 2)))
        ).real() < 0;
    }

  3. #3
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    For milisecond pauses, on a windows machine, use Sleep.
    Code:
    #include <stdio.h>
    #include <windows.h>
    
    int main ( void )
    {
    	printf("Pausing for 250 miliseconds..\n");
    	Sleep(250);
    	return 0;
    }
    For second pausing, use this..
    Code:
    #include <time.h>
    
    void Wait ( int Seconds );
    
    void Wait ( int Seconds ) 
    {
        clock_t endtime = clock() + Seconds * CLOCKS_PER_SEC;
        while ( ( clock() < endtime ) );
    }
    The world is waiting. I must leave you now.

  4. #4
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    There are several solutions. The simpliest solution for 32-bit console program running one process is sleep() as mentioned above.

    sleep() parameter is millisecond.

    Kuphryn

  5. #5
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    Angry


    Okay, none of those work, the sleep has no errors, but it doesn't 'sleep'. The other i get 15 errors!
    This war, like the next war, is a war to end war.

  6. #6
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    What library files do you include in the program?

    Kuphryn

  7. #7
    End Of Line Hammer's Avatar
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    Originally posted by Blizzarddog

    Okay, none of those work, the sleep has no errors, but it doesn't 'sleep'. The other i get 15 errors!
    Shadow's windows code with the Sleep() function only sleeps for 250 milliseconds, thats a quarter of a second. To see it sleep for say 5 seconds, use Sleep(5000);
    When all else fails, read the instructions.
    If you're posting code, use code tags: [code] /* insert code here */ [/code]

  8. #8
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    To add to what Hammer said, as far as the raw second pausing goes, that was not a complete program.

    The first line, is the header you need to include.
    The second, is the function prototype.
    The third, is the actual function.

    To use it properly, do like so:
    Code:
    #include <time.h>
    
    void Wait ( int Seconds );
    
    int main ( void )
    {
        printf("Pausing for 3 seconds..\n");
        Wait(3);
        return 0;
    }
    
    void Wait ( int Seconds ) 
    {
        clock_t endtime = clock() + Seconds * CLOCKS_PER_SEC;
        while ( ( clock() < endtime ) );
    }
    The world is waiting. I must leave you now.

  9. #9
    Linux Forever
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    the code

    This is my code:


    #include <iostream>
    #include <string>
    #include <cstdlib>
    #include <stdlib.h>
    #include <windows.h>
    #include <stdio.h>
    #include <windows.h>
    #include <time.h>
    using namespace std;

    void Wait ( int Seconds );

    int main ( void )

    {
    string a("Norton anti virus scan results:\n");
    string b("\n");
    string c("54 Hits\n");
    string d("Viruses found: 4\n");
    string e("Code red Worm\n");
    string f("Nimda Virus\n");
    string g("Love Bug Virus\n");
    string h("Kevlarsmart Worm\n");
    string j("Trojans: 50\n");
    string k("");
    cout << a;
    wait (5)
    cout << k;
    wait(2) cout << b;
    cout << k;
    cout << c;
    cout << k;
    cout << d;
    cout << k;
    cout << e;
    cout << f;
    cout << g;
    cout << h;
    cout << "No files fixed\n";
    cout << j;
    cout << "No files fixed\n";
    system("PAUSE");
    return 0;
    }


    The code is just a "play" program to use strings and timer.
    again, its written in c++
    hey, gimme a break, it sux because im a teen!
    This war, like the next war, is a war to end war.

  10. #10
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    This is what you want
    Code:
    #include <iostream>
    #include <string>
    #include <cstdlib>
    #include <stdlib.h>
    #include <windows.h>
    #include <stdio.h>
    #include <windows.h>
    #include <time.h>
    using namespace std;
    
    int Wait ( int Seconds );
    
    int main ( void )
    {
    	string a("Norton anti virus scan results:\n");
    	string b("\n");
    	string c("54 Hits\n");
    	string d("Viruses found: 4\n");
    	string e("Code red Worm\n");	
    	string f("Nimda Virus\n");
    	string g("Love Bug Virus\n");
    	string h("Kevlarsmart Worm\n");
    	string j("Trojans: 50\n");
    	string k("");
    	cout << a;
    	Wait (5);
    	cout << k;
    	Wait(2);
    	cout << b;
    	cout << k;
    	cout << c;
    	cout << k;
    	cout << d;
    	cout << k;
    	cout << e;
    	cout << f;
    	cout << g;
    	cout << h;
    	cout << "No files fixed\n";
    	cout << j;
    	cout << "No files fixed\n";
    	system("PAUSE");
    	return 0;
    }
    
    int Wait ( int Seconds ) 
    {
        clock_t endtime = clock() + Seconds * CLOCKS_PER_SEC;
        while ( ( clock() < endtime ) );
        return 0;
    }
    Oh, and please use code tags.
    The world is waiting. I must leave you now.

  11. #11
    Code Goddess Prelude's Avatar
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    >hey, gimme a break, it sux because im a teen!
    That's no excuse, we have teenage members who write very nice code. I myself am only barely out of my teens.

    Since you have windows.h you might as well make use of Sleep(), just remember that it takes milliseconds, not full seconds as an argument:
    Code:
    #include <iostream>
    #include <string>
    #include <windows.h>
    using namespace std;
    
    void wait ( int mseconds )
    {
      Sleep ( mseconds );
    }
    
    int main ( void )
    {
      string a ( "Norton anti virus scan results:\n" );
      string b ( "\n" );
      string c ( "54 Hits\n" );
      string d ( "Viruses found: 4\n" );
      string e ( "Code red Worm\n" );
      string f ( "Nimda Virus\n" );
      string g ( "Love Bug Virus\n" );
      string h ( "Kevlarsmart Worm\n" );
      string j ( "Trojans: 50\n" );
    
      cout << a;
      wait ( 5000 );
      cout << b;
      wait ( 2000 );
      cout<< c << d << e << f << g << h;
      cout << "No files fixed\n";
      cout << j;
      cout << "No files fixed\n";
    
      system ( "pause" );
    
      return 0;
    }
    -Prelude
    My best code is written with the delete key.

  12. #12
    Linux Forever
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    Talking

    Well, i mean:
    Im only a teen that started CPP about 5 weeks ago!

  13. #13
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    > Im only a teen that started CPP about 5 weeks ago!
    90% of this community/message board cannot drive yet, or just barely is able to drive. They all right great code.

    Point being, anybody who is 20+ is the minority here..
    The world is waiting. I must leave you now.

  14. #14
    Linux Forever
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    Talking

    ITS WORKING!
    This war, like the next war, is a war to end war.

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