implement time delay in c

Question

I don\'t know exactly how to word a search for this.. so I haven\'t had any luck finding anything.. :S

I need to implement a time delay in C.

for example I w

Answer 1

Is it timer?

For WIN32 try http://msdn.microsoft.com/en-us/library/ms687012%28VS.85%29.aspx

Answer 2

// Provides ANSI C method of delaying x milliseconds

#include <stdio.h>
#include <stdlib.h>
#include <time.h>

void delayMillis(unsigned long ms) {
    clock_t start_ticks = clock();
    unsigned long millis_ticks = CLOCKS_PER_SEC/1000;
    while (clock()-start_ticks < ms*millis_ticks) {
    }
}    

/* 
 * Example output:
 * 
 * CLOCKS_PER_SEC:[1000000]
 * 
 * Test Delay of 800 ms....
 * 
 * start[2054], end[802058], 
 * elapsedSec:[0.802058]
 */
int testDelayMillis() {

    printf("CLOCKS_PER_SEC:[%lu]\n\n", CLOCKS_PER_SEC);
    clock_t start_t, end_t;
    start_t = clock();
    printf("Test Delay of 800 ms....\n", CLOCKS_PER_SEC);
    delayMillis(800); 
    end_t = clock();
    double elapsedSec = end_t/(double)CLOCKS_PER_SEC;
    printf("\nstart[%lu], end[%lu], \nelapsedSec:[%f]\n", start_t, end_t, elapsedSec);

}

int main() {    
    testDelayMillis();
}

Answer 3

you can simply call delay() function. So if you want to delay the process in 3 seconds, call delay(3000)...

Answer 4

What operating system are you using?
I know that on windows, you can do something like this:

//include crap
#include <windows.h>

int main () {
  //do things
  Sleep(/* ur wait time in ms */);// wait for param1 ms
  //continue to do things
}

Answer 5

Try sleep(int number_of_seconds)

Answer 6

C11 has a function specifically for this:

#include <threads.h>
#include <time.h>
#include <stdio.h>

void sleep(time_t seconds) {
    struct timespec time;
    time.tv_sec = seconds;
    time.tv_nsec = 0;
    while (thrd_sleep(&time, &time)) {}
}

int main() {
    puts("Sleeping for 5 seconds...");
    sleep(5);
    puts("Done!");
    return 0;
}

Note that this is only available starting in glibc 2.28.