string(3) — GENIX 4.1A



      STRING(3)               GENIX Programmer's Manual               STRING(3)



      NAME
           strcat, strncat, strcmp, strncmp, strcpy,  strncpy,  strlen,  index,
           rindex - string operations

      SYNOPSIS
           char *strcat(s1, s2)
           char *s1, *s2;

           char *strncat(s1, s2, n)
           char *s1, *s2;

           strcmp(s1, s2)
           char *s1, *s2;

           strncmp(s1, s2, n)
           char *s1, *s2;

           char *strcpy(s1, s2)
           char *s1, *s2;

           char *strncpy(s1, s2, n)
           char *s1, *s2;

           strlen(s)
           char *s;

           char *index(s, c)
           char *s, c;

           char *rindex(s, c)
           char *s, c;

      DESCRIPTION
           These functions operate on null-terminated  strings.   They  do  not
           check for overflow of any receiving string.

           Strcat appends a copy of string s2 to the end of string s1.  Strncat
           copies  at  most  n  characters.  Both return a pointer to the null-
           terminated result.

           Strcmp compares its arguments and returns an integer  greater  than,
           equal  to,  or  less  than  0,  according as s1 is lexicographically
           greater than, equal to, or less than s2.   Strncmp  makes  the  same
           comparison but looks at at most n characters.

           Strcpy copies string s2 to s1, stopping after the null character has
           been  moved.   Strncpy  copies  exactly  n characters, truncating or
           null-padding s2; the target may not be null-terminated if the length
           of s2 is n or more.  Both return s1.

           Strlen returns the number of non-null characters in s.




      Printed 11/16/83                                                        1



      STRING(3)               GENIX Programmer's Manual               STRING(3)



           Index (rindex) returns a pointer to the first (last)  occurrence  of
           character c in string s, or zero if c does not occur in  the string.

      BUGS
           Strcmp uses native character comparison, which is signed on  PDP11's
           and VAX-11's, unsigned on other machines.

















































      Printed 11/16/83                                                        2

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