How to timing?

Hi everybody!

I'm using Turbo C 2.0.
I want to use timers in my program. How to do it? Are there any functions for it, or maybe asm needed?My C knowledge is rather big, but I don't know anything about timing :( !

Thanks in advance!

Check the Help on time.h If there is such a thing in TC2.

I use TC3, but i need something more accurate than these timing functions.

Hi(I'm registered now)!

I don't see any time.h!Would you explain it there?

Well, you need to #include time.h to have the function clock() which returns the numer of ticks your CPU made since your app is running. Dividing that by constant CLK_TCK (also in time.h) results in seconds, dividing that by 1000 results in milliseconds (but not accurate, i checked the restults, only accurate to 5/100 sec :( )

Someone else using TC2 here that has an alternative?

I hope what I attached'll help you!I'm not sure that it is absolutely precise, give a test for it ;) !

The two files which people have referenced are very helpful, but if you're not looking for accuracy, and you're just loking for an quick pause, you can just have a really long (repeated about 1,000,000 times, do nothing loop (adjust the number, but be aware, slower computer will take longer, faster ones will take less time. Consider your audience.

use this method :

typedef unsigned short word;

word start;

float t1;

word *my_clock=(word *)0x0000046C;
/* this points to the 18.2hz system clock. */


srand(*my_clock); /* seed the number generator. */

start=*my_clock; /* record the starting time. */

t1=(*my_clock-start)/18.2; /* calculate how long it took. */


/*I took those codes from http://www.brackeen.com/home/vga/sou...1/pixel.c.html */

sorry i forgot to include stdlib.h

if you want a quick pause, you could also use the delay() function, it's in dos.h, I think, it's like this

delay(100); //For a 100 ms pause

delay(1); //For a 1 ms pause

delay(100000) //For a 100 s pause


if you want it to pause until it receives a key, use getch();



Good Luck

Oskilian

If you are running programs in msdos prompt you can use Win API function called GetTickCount() (or view my post in general c forum).