How to halt Prog Execution for some time?

Applications Programming
1

Hi,
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.

Regards,

2

There is. Right from the man page:

SLEEP(3)                       Linux Programmer's Manual                       SLEEP(3)

NAME
       sleep - Sleep for the specified number of seconds

SYNOPSIS
       #include <unistd.h>

       unsigned int sleep(unsigned int seconds);

DESCRIPTION
       sleep()  makes the current process sleep until seconds seconds have elapsed or a
       signal arrives which is not ignored.

RETURN VALUE
       Zero if the requested time has elapsed, or the number of seconds left to  sleep.
3

There's also usleep to do the same with microsecond granularity.

4

If you do 'man sleep' you will get the first entry it finds which is the shell sleep command in manual section 1(?).

To get the C definiton of the sleep function you need to qualify the manual section to search into: 'man 3 sleep'