beginner c++ question

[widgetman]

im very new at c++ and want to now if there is a way to run some sort of sleep() or wait() or something that will pause the code for a given amount of time.

im making terminal applications and i have experience with other languages that all have some similar command...so i was just wondering...

thanks

 

[Viro]

In your terminal, type in "man 3 sleep" without the quotes. That should give you information about a sleep function that provides the functionality you're asking for.

 

[widgetman]

thanks Viro !!

by the way, is there a function that will sleep for a given amount of milliseconds?

 

[Viro]

How about nanosleep? man nanosleep should give you all you need to know how to use it.

 

[widgetman]

im getting some weird errors with nanosleep...like:
"invalid conversion from 'int' to 'timespec*' "
and
"invalid conversion from 'int' to 'const timespec*' "

the help file said it takes more than one parameter, but im not doing the parameters right...

my code is:

for (int i=0;i<=26;i++) {
     cout << "*";
     nanosleep(500, 500);
}

 

[Viro]

That's because it takes a timespec structure as an argument, and not integers. That's why pasing 500 won't work.

What you could try is do something like

struct timespec tp;
tp.tv_sec = 1; //seconds so sleep for
tp.tv_nsec = 1000; //nano seconds to sleep for
nanosleep(&tp, NULL);