2.11BSD#431 - /usr/man/cat3/strcmp.0

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


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

SYNOPSIS
     #include <strings.h>

     char *strcat(s, append)
     char *s, *append;

     char *strncat(s, append, count)
     char *s, *append;
     int count;

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

     strncmp(s1, s2, count)
     char *s1, *s2;
     int count;

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

     strncasecmp(s1, s2, count)
     char *s1, *s2;
     int count;

     char *strcpy(to, from)
     char *to, *from;

     char *strncpy(to, from, count)
     char *to, *from;
     int count;

     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 append to the end of string
     s. Strncat copies at most count characters.  Both return a
     pointer to the null-terminated result.


Printed 11/26/99	October 22, 1987			1


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


     Strcmp compares its arguments and returns an integer greater
     than, equal to, or less than 0, according as s1 is lexico-
     graphically greater than, equal to, or less than s2.
     Strncmp makes the same comparison but looks at at most count
     characters.  Strcasecmp and strncasecmp are identical in
     function, but are case insensitive.  The returned lexico-
     graphic difference reflects a conversion to lower-case.

     Strcpy copies string from to to, stopping after the null
     character has been moved.	Strncpy copies exactly count
     characters, appending nulls if from is less than count char-
     acters in length; the target may not be null-terminated if
     the length of from is count or more.  Both return to.

     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.  Setting c to NULL works.


Printed 11/26/99	October 22, 1987			2