C/Strncatf
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| − | This is a variation of <code>strcat()</code> that allows you to pass a formatted string like <code>printf()</code>. It also takes a max length for dest, not for how much of src to use (like <code>strncat()</code>. | + | This is a variation of <code>strcat()</code> that allows you to pass a formatted string like <code>printf()</code>. It also takes a max length for dest, not for how much of src to use (like <code>strncat()</code>). |
<source lang="c"> | <source lang="c"> | ||
char *strncatf(char *dest, int length, char *format, ...) { | char *strncatf(char *dest, int length, char *format, ...) { | ||
Revision as of 12:22, 4 March 2010
This is a variation of strcat() that allows you to pass a formatted string like printf(). It also takes a max length for dest, not for how much of src to use (like strncat()).
char *strncatf(char *dest, int length, char *format, ...) { char buf[4096]; va_list ap; va_start(ap,format); vsnprintf(buf,sizeof(buf),format,ap); va_end(ap); length -= strlen(dest); strncat(dest,buf,length-1); }
