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STRCAT(3)		   Linux Programmer's Manual		     STRCAT(3)

       strcat, strncat - concatenate two strings

       #include <string.h>

       char *strcat(char *dest, const char *src);

       char *strncat(char *dest, const char *src, size_t n);

       The  strcat() function appends the src string to the dest string, over‐
       writing the null byte ('\0') at the end of dest, and then adds a termi‐
       nating  null  byte.   The  strings may not overlap, and the dest string
       must have enough space for the result.

       The strncat() function is similar, except that

       *  it will use at most n characters from src; and

       *  src does not need to be null terminated if it	 contains  n  or  more

       As  with	 strcat(),  the resulting string in dest is always null termi‐

       If src contains n or more characters, strncat() writes  n+1  characters
       to  dest	 (n  from src plus the terminating null byte).	Therefore, the
       size of dest must be at least strlen(dest)+n+1.

       A simple implementation of strncat() might be:

	   strncat(char *dest, const char *src, size_t n)
	       size_t dest_len = strlen(dest);
	       size_t i;

	       for (i = 0 ; i < n && src[i] != '\0' ; i++)
		   dest[dest_len + i] = src[i];
	       dest[dest_len + i] = '\0';

	       return dest;

       The strcat() and strncat() functions return a pointer to the  resulting
       string dest.

       SVr4, 4.3BSD, C89, C99.

       bcopy(3),  memccpy(3),  memcpy(3),  strcpy(3),  strncpy(3),  wcscat(3),

       This page is part of release 3.22 of the Linux  man-pages  project.   A
       description  of	the project, and information about reporting bugs, can
       be found at

GNU				  2008-06-13			     STRCAT(3)

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