String formatting

[kartoffel]

How can I specify formatting options (ex: setw(4)) to a string using the sprintf function.

Example:
=============
char currentPosition[250];
sprintf(currentPosition, "X position: %f Y position: %f Z position %f", xPos, yPos, zPos)
=============
I want xPos, yPos and zPos to always be 4 characters wide.
What is the way to do this?

Also, if I use "char* currentPosition" to declare my string, I get an application error. Why is that?

Thanks

 

[JOLESEN]

sprintf(dest, "%4d", ival); // integer will be printed and occupy (at least) 4 positions (if ival is 12345, it will occupy 5 positions).

sprintf(dest, "%04d", ival); // integer will be printed and occupy (at least) 4 positions, but leading 0's will be used if the output is shorter than 4.

OBS OBS :
%d means you will supply integer argument to sprintf, not floating points, or strings or .....

There are lots of possibilites - you need to check documentation :
"Format Specification Fields: printf and wprintf Functions"

<Also, if I use &quot;char* currentPosition&quot; to declare my string, I get an application error. Why is that?
>
You can't just put in a pointer ... it needs to point to some memory owned by your application.
Allocate a buffer and let the pointer point to this buffer :

char buf[256];
char * CurrentPosition = buf;
sprintf(CurrentPosition, &quot;..................&quot;, ....);

/JOlesen