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Top Forums Programming how to use hex escape char with string in C? Post 302475202 by vistastar on Saturday 27th of November 2010 04:23:30 AM
Old 11-27-2010
Why don't the complier just translates the fixed few of characters(eg: two char) after \x to an escape char?
 

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strccpy(3GEN)					     String Pattern-Matching Library Functions					     strccpy(3GEN)

NAME
strccpy, streadd, strcadd, strecpy - copy strings, compressing or expanding escape codes SYNOPSIS
cc [ flag ... ] file ... -lgen [ library ... ] #include <libgen.h> char *strccpy(char *output, const char *input); char *strcadd(char *output, const char *input); char *strecpy(char *output, const char *input, const char *exceptions); char *streadd(char *output, const char *input, const char *exceptions); DESCRIPTION
strccpy() copies the input string, up to a null byte, to the output string, compressing the C-language escape sequences (for example, , 01) to the equivalent character. A null byte is appended to the output. The output argument must point to a space big enough to accommo- date the result. If it is as big as the space pointed to by input it is guaranteed to be big enough. strccpy() returns the output argument. strcadd() is identical to strccpy(), except that it returns the pointer to the null byte that terminates the output. strecpy() copies the input string, up to a null byte, to the output string, expanding non-graphic characters to their equivalent C-language escape sequences (for example, , 01). The output argument must point to a space big enough to accommodate the result; four times the space pointed to by input is guaranteed to be big enough (each character could become and 3 digits). Characters in the exceptions string are not expanded. The exceptions argument may be zero, meaning all non-graphic characters are expanded. strecpy() returns the output argument. streadd() is identical to strecpy(), except that it returns the pointer to the null byte that terminates the output. EXAMPLES
Example 1: Example of expanding and compressing escape codes. /* expand all but newline and tab */ strecpy( output, input, " " ); /* concatenate and compress several strings */ cp = strcadd( output, input1 ); cp = strcadd( cp, input2 ); cp = strcadd( cp, input3 ); ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe | +-----------------------------+-----------------------------+ SEE ALSO
string(3C), strfind(3GEN), attributes(5) NOTES
When compiling multi-thread applications, the _REENTRANT flag must be defined on the compile line. This flag should only be used in multi- thread applications. SunOS 5.10 29 Dec 1996 strccpy(3GEN)
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