Thread: Sprintf masks Doubt(s)

Hi!

i dont know what is the difference between the 2 masks (the result
on visual c++ 2010 is the same):

Code:

sprintf(msg, "Number %2.2d",10);
sprintf(msg, "Number %02.2d",10);

and this mask too (what 0* means?)

Code:

sprintf(msg, "Number %0*d",10);

Thanks!!

Try numbers other than ten and you might just find out yourself.

Like what? i tried others too but with or without 0 (2.2 / 02.2) i got the same result. this is not a homework or something that i want you to do for me... If i'm asking here is because i really want to know the difference. So if you will say "try others to find yourself", please, don't answer my post, this is for people who want to learn and exchange experiences...

anyway, thank you!

And i still dont know the difference, so please, if anyone knows just tell me.

i have tried with this:

Code:

    sprintf(msg, "Teste %02.2d",100);
    sprintf(msg, "Teste %02.2d",100000);
    sprintf(msg, "Teste %02.2d",100000000);


    sprintf(msg, "Teste %2.2d",100);
    sprintf(msg, "Teste %2.2d",100000);
    sprintf(msg, "Teste %2.2d",100000000);

And still the same result for both.

1 - And again, i dont want you to write a program for me, i just want to know whats the difference between 2 masks(o2.2 and 2.2).

2 - I looked at the reference before and i understood that the 0 is used for left padding... Buf even if i dont use the 0 i still got the padding of 0 on the .2 number...

i just want to know something like "ITS FOR PADDING" or "ITS FOR THIS OR THAT", dont a program write if you dont want to your "majesty" ^^

Originally Posted by RLeePlusPlus

i have tried with this:

Code:

    sprintf(msg, "Teste %02.2d",100);
    sprintf(msg, "Teste %02.2d",100000);
    sprintf(msg, "Teste %02.2d",100000000);


    sprintf(msg, "Teste %2.2d",100);
    sprintf(msg, "Teste %2.2d",100000);
    sprintf(msg, "Teste %2.2d",100000000);

And still the same result for both.

1 - And again, i dont want you to write a program for me, i just want to know whats the difference between 2 masks(o2.2 and 2.2).

2 - I looked at the reference before and i understood that the 0 is used for left padding... Buf even if i dont use the 0 i still got the padding of 0 on the .2 number...

i just want to know something like "ITS FOR PADDING" or "ITS FOR THIS OR THAT", dont a program write if you dont want to your "majesty" ^^

Ummm... why don't you try changing all those 2s to 8s and see what happens?

Really... rather than getting all ........ed off, do some real experimenting.

i still got the same results, with or without the '0' preceding the width... Just for information, i'm using VS2010 express

thank you

So, now you have your answer... It doesn't matter (in VS2010).

Oh my... yet another short fuse who can't deal with reality.

Look sport... Some compilers and libraries do things differently... only the authors of those libraries know why and for the most part they're not talking. What do you want me to tell you? The only available answer is that we don't know why... we are thus left to work with what is before us.

You can talk about it till you're blue in the face... nothing is going to change that basic fact.

Now... get that foul temper of yours under control, or get lost.

You understand well. You're welcome.

"%2d" means print the integer value 2 spaces to the left of the last character printed in the string, ".2" means to 2 decimal places. "Decimal place" does not mean "zeroes".

Mmmmmmm, should've read more thread. *prepares self for condescension

Look at this. See how many things I'm wrong about? SEE?!