malloc ,calloc code problem..

**~~transgalactic2~~** · 10-21-2008

much better
thanks

**~~transgalactic2~~** · 10-21-2008

what mean this part of the printf

Code:

&#37;05.5f, "

there is %05.5f
whats that?

and there is a space after a comma
what this thing does?

**tabstop** · 10-21-2008

Look up format specifiers in your textbook, there under printf. Everything else in the quotes just gets printed normally. (The last quote is just the end of your quotes.)

**~~transgalactic2~~** · 10-21-2008

i cant find stuff on that
i looked in the formal
http://www.cplusplus.com/reference/c...io/printf.html

i cant see there this %05.5f, " stuff

**tabstop** · 10-21-2008

Originally Posted by transgalactic2

i cant find stuff on that
i looked in the formal
http://www.cplusplus.com/reference/c...io/printf.html

i cant see there this %05.5f, " stuff

Since it is listed there at the top of the page, that's a problem.

f Decimal floating point
0 Left-pads the number with zeroes (0) instead of spaces, where padding is specified (see width sub-specifier).
(number) Minimum number of characters to be printed. If the value to be printed is shorter than this number, the result is padded with blank spaces. The value is not truncated even if the result is larger.
.number For e, E and f specifiers: this is the number of digits to be printed after the decimal point.

**iMalc** · 10-22-2008

Here's a tip, when somebody does get some advice wrong, there will probably someone posting to to correct them fairly promptly.
If a post has gone unchallenged for a while, and is even backed up by someone else, it's a pretty safe bet that it's correct.
If you suspect some advice was incorrect, just ask for someone else to confirm.

**~~transgalactic2~~** · 10-22-2008

so the first 5 means that we need to print at least five chars in this float number
and the second 5 means to print the float number in persition 5 place after the point

??

**tabstop** · 10-22-2008

Read it again:

.number For e, E and f specifiers: this is the number of digits to be printed after the decimal point.

There will be five digits printed after the decimal point.

**~~transgalactic2~~** · 10-22-2008

it says there

%[flags][width][.precision][length]specifier

but in my printf i get the flag at the last place

??

**tabstop** · 10-22-2008

Eh? Your flag was 0, your width was 5, your precision was 5, you didn't have a length, and your specifier was f.

**~~transgalactic2~~** · 10-23-2008

can you rephrase this line
"0 Left-pads the number with zeroes (0) instead of spaces, where padding is specified (see width sub-specifier)."

i cant understand the meaning of this padding thing
?

**matsp** · 10-23-2008

If we use %d as an example:

Code:

printf("%5d\n", 123);
printf("%05d\n", 123);

would produce the output of:

Code:

  123
00123

So in the first example, it gives you spaces to make a length of five, in the second case, it uses 0 to fill the length.

--
Mats

**~~transgalactic2~~** · 10-23-2008

so when there is no char between the % and 5
it put blank spaces?

**MK27** · 10-23-2008

Originally Posted by transgalactic2

so when there is no char between the % and 5
it put blank spaces?

Yes.

**~~master5001~~** · 10-23-2008

Can I just recommend that you read a book? There are some fine pieces of programming literature recommended on the thread aptly entitled C Book Recommendations.