Is it legal?

[xhungab]

Hello,

Is it legal to write

printf(" %+*.*f",5,0,A[r][c]);

Instead of

printf(" %+5.0f",A[r][c]);

Thank

[Konstantin Miller]

xhungab wrote:

Hello,

Is it legal to write

printf(" %+*.*f",5,0,A[r][c]);

Instead of

printf(" %+5.0f",A[r][c]);

Thank

Hi!

Yes it is for example with GNU C library as said in
http://www.gnu.org/software/libc/man...atted%20Output.

But they also say "Other C library versions may not recognize this syntax."

Konstantin

[Schraalhans Keukenmeester]

xhungab wrote:

Hello,

Is it legal to write

printf(" %+*.*f",5,0,A[r][c]);

Instead of

printf(" %+5.0f",A[r][c]);

Thank

You mean with the + in it ? Looks yucky anyways. Why would you want to
do this like that?
Try invoking your compiler in C90 / C99 mode, depending on which
standard you want to adhere to, and enable strict/pedantic mode.

Sh

[Konstantin Miller]

Schraalhans Keukenmeester wrote:

xhungab wrote:

>Hello,

Is it legal to write

printf(" %+*.*f",5,0,A[r][c]);

Instead of

printf(" %+5.0f",A[r][c]);

Thank

You mean with the + in it ? Looks yucky anyways. Why would you want to
do this like that?
Try invoking your compiler in C90 / C99 mode, depending on which
standard you want to adhere to, and enable strict/pedantic mode.

Sh

What is wrong with the + ?

kmi

[Schraalhans Keukenmeester]

Konstantin Miller wrote:

Schraalhans Keukenmeester wrote:

>xhungab wrote:

>>Hello,

Is it legal to write

printf(" %+*.*f",5,0,A[r][c]);

Instead of

printf(" %+5.0f",A[r][c]);

Thank

You mean with the + in it ? Looks yucky anyways. Why would you want to
do this like that?
Try invoking your compiler in C90 / C99 mode, depending on which
standard you want to adhere to, and enable strict/pedantic mode.

Sh

What is wrong with the + ?

kmi

Nothing in particular, I just think it's bad coding style.
Either the actual width already is a positive and the + does not change
that, or it's a negative, in which case the + doesn't make it otherwise,
while a glimpse at the code may give the reader the suggestion it's a
positive value he/she is dealing with. As such, the + seams completely
useless here. Unless *I* have missed some other meaning of the + in this
example. In which case I'd stand corrected once you educate me further ;)

Kindest
Sh.

[xhungab]

It is for this function.

In this way I can choose the format for any matrices.

void p_mR(
double **A,
int e,
int d
)
{
int r;
int c;

for(r=FIRST; r<A[R_SIZE][OF]; r++)
{
printf("\n");
for (c=FIRST; c<A[C_SIZE][OF]; c++)

printf(" %+*.*f",e,d,A[r][c]);
}
printf("\n\n");
}

[Christopher Benson-Manica]

Schraalhans Keukenmeester <fi********************@xsfourall.ennelwrote:

>printf(" %+*.*f",5,0,A[r][c]);

What is wrong with the + ?

Nothing in particular, I just think it's bad coding style.

Not so. It merely indicates the programmer's desire that the numeric
output always be preceded by a '+' or a '-' sign. It means the same
thing in

printf( "%+f", A[r][c] );

and may well produce exactly the behavior the programmer requires.

useless here. Unless *I* have missed some other meaning of the + in this
example. In which case I'd stand corrected once you educate me further ;)

You did :-)

--
C. Benson Manica | I *should* know what I'm talking about - if I
cbmanica(at)gmail.com | don't, I need to know. Flames welcome.

[xhungab]

Thank for your help.

[Fred Kleinschmidt]

"xhungab" <xh*****@yahoo.frwrote in message
news:11**********************@i3g2000cwc.googlegro ups.com...

It is for this function.

What is for this function? What do you mean by "it"?

>
In this way I can choose the format for any matrices.

void p_mR(
double **A,
int e,
int d
)
{
int r;
int c;

for(r=FIRST; r<A[R_SIZE][OF]; r++)
{
printf("\n");
for (c=FIRST; c<A[C_SIZE][OF]; c++)

printf(" %+*.*f",e,d,A[r][c]);
}
printf("\n\n");
}

[xhungab]

The command :

printf(" %+*.*f",e,d,A[r][c]);

was for this function.

void p_mR(
double **A,
int e,
int d
)
{
int r;
int c;
for(r=FIRST; r<A[R_SIZE][OF]; r++)
{
printf("\n");
for (c=FIRST; c<A[C_SIZE][OF]; c++)
printf(" %+*.*f",e,d,A[r][c]);
}
printf("\n\n");
}
I use this function to print real matrices.
..
..

[J. J. Farrell]

xhungab wrote:

Hello,

Is it legal to write

printf(" %+*.*f",5,0,A[r][c]);

Instead of

printf(" %+5.0f",A[r][c]);

Yes, it's standard printf() format syntax.