Time
I need to make program that will work under dos and i need to see how much time user need to press enter two times.
If i use time () and diftime () (in time.h) they will give mi number of seconds, but i need it in milliseconds besaouse of precision!
Any ideas???
Last edited by Autoexes; 10-20-2001 at 10:11 AM.
#cd pub
#more beer
seconds/milliseconds
printf milliseconds
This tops strange questions of the month! Lemme see, is this a curioso question or are we designing weapons systems here?? I couldn't help but to sense a strange urgency in your post, and well I AM a Texan and thus am quite prone to conspiritoral fits and general signs of nervousness when a person who has precisely 1 post on the board from no less than Serbia, asking for " high recision" timing!
Forgive me if I am a little too paranoid!!
Perhaps a U.K.er would have better judgement than I!
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; }
Well, sorry for my type mistaces, but i think that msg. boards shall not have posts like this!
If you want to help me that's ok, if you dont wont to help me, that's ok too, but do not express that on this way!!!
You can ignore my post, send me private message, or something like that, but it is stupid to post that on c forum!
I think that best solution for all of us is that moderator delete our messages, and i change my 1st.
p.s. I will not comment things about Serbia!
Last edited by Autoexes; 10-20-2001 at 12:34 PM.
Use the clock() function.
It's not quite millisecond precision, but its a lot better than seconds.
If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
If at first you don't succeed, try writing your phone number on the exam paper.
> You can ignore my post, send me private message, or
> something like that, but it is stupid to post that on c forum!
Someone needs to get a sense of humor. It is a prerequisite for posting on any message board.
Quzah.
Ok, thank you very much, but can you post any example?Originally posted by Salem
Use the clock() function.
It's not quite millisecond precision, but its a lot better than seconds.
I know thet there is clock function i time.h and unix sys call, by i dont know how to utilise that function in "real chalange".
#cd pub
#more beer
timer example
clock_t start, stop;
start = clock();
for(x=0; x<100000; x++);
stop = clock();
clock counts the number of processor 'ticks'.
All spelling mistakes, syntatical errors and stupid comments are intentional.
add this to above
time_in_secs = (stop - start) / CLOCKS_PER_SEC;
I know you want more precision than seconds but this is a start
All spelling mistakes, syntatical errors and stupid comments are intentional.
I have read some man pages and found something like this, and there it is written that if i want to use something smaller then seconds i need to remove /CLOCK_PER_SECS because value of that variable is 1000000 or something like that.Originally posted by C_Coder
add this to above
time_in_secs = (stop - start) / CLOCKS_PER_SEC;
I know you want more precision than seconds but this is a start
Last edited by Autoexes; 10-21-2001 at 06:30 AM.
#cd pub
#more beer
clock() counts the number of processor 'ticks' while your program is running not an amount of time. CLOCKS_PER_SEC is a macro which turns the 'ticks' into a time, without using it the result from clock() would be meaningless as how would you know how many 'ticks' there were in an amount of time.
I don't know how you can achieve millisecond precision but I hope someone can tell you as i'ts bugging the hell out of me!
All spelling mistakes, syntatical errors and stupid comments are intentional.
I found answer!
The answer is GetTickCount() in windows.h, wich will return the number of milliseconds from starting the OS.
Bad side is that this is running only onder Windows
#cd pub
#more beer
If you want to get millisecond precision under Unix you can use
gettimeofday(struct timeval*, struct timezone*);
Cheers.
1 rule of the Samurai Code: if you have nothing to say, don't say anything at all!
