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

 

[Schraalhans Keukenmeester]

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

 

[Schraalhans Keukenmeester]

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]

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

 

[Konstantin Miller]

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/manual/html_mono/libc.html#Formatted Output.

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

Konstantin

 

[Konstantin Miller]

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

 

[xhungab]

Thank for your help.

 

[Fred Kleinschmidt]

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]

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.