string(3) — bsd

STRING(3)                            BSD                             STRING(3)



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

SYNOPSIS
     #include <strings.h>

     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.

     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.
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