11-08-2006
hmmm, I was hoping I would be able to do this with sprintf or similar. In VB I could use 'cstr(count)' to cast the count integer to a string, is there nothing similar in C?
Thanks, G
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LEARN ABOUT DEBIAN
strcstr
STRCSTR(3pub) C Programmer's Manual STRCSTR(3pub)
NAME
strcstr - convert memory block to printable C string notation
SYNOPSIS
#include <publib.h>
void strcstr(char *str, size_t max, const void *block, size_t n);
DESCRIPTION
strcstr converts the contents of an arbitrary memory block (which need not be a zero terminated string) into a printable notation using
normal C string literal syntax. This can be used for example to store potentially binary data in a file, or in debugging outputs.
All characters for which there is a simple shorthand escape sequence (', ", ?, , a, , f,
,
, , v) are stored using that nota-
tion. is stored as . All other non-printable characters are stored using a hexadecimal escape sequence. All other printable charac-
ters are stored as is.
The isprint(3) macro is used to determine whether a character is printable (i.e., whether it is printed as is, or using special notation).
Therefore, the output depends on the locale.
RETURN VALUE
strcstr returns nothing.
EXAMPLE
The following code dumps input to the standard output in a guaranteed (modulo locale bugs) printable format. It might be used for debug-
ging.
#include <stdio.h>
#include <publib.h>
int main(void) {
char line[512];
char cstr[512*(CHAR_BIT/4+1+2)+1]; /* +2 for x, +1 for ,
the rest to be able to
store the hex code for
512 chars. */
while (fgets(line, sizeof(line), stdin) != NULL) {
strcstr(cstr, sizeof(cstr), line, strlen(line));
printf("%s0, cstr);
}
return 0;
}
SEE ALSO
publib(3), strins(3)
AUTHOR
Lars Wirzenius (lars.wirzenius@helsinki.fi)
Publib C Programmer's Manual STRCSTR(3pub)