STRING(3)                                                            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.

       _S_t_r_c_a_t  appends  a  copy of string _s_2 to the end of string _s_1.  _S_t_r_n_c_a_t
       copies at most _n characters.  Both return a pointer to the  null-termi‐
       nated result.

       _S_t_r_c_m_p  compares  its  arguments  and  returns an integer greater than,
       equal to, or less than 0, according as _s_1 is lexicographically  greater
       than, equal to, or less than _s_2.  _S_t_r_n_c_m_p makes the same comparison but
       looks at at most _n characters.

       _S_t_r_c_p_y copies string _s_2 to _s_1_, stopping after the  null  character  has
       been  moved.   _S_t_r_n_c_p_y copies exactly _n characters, truncating or null-
       padding _s_2_; the target may not be null-terminated if the length  of  _s_2
       is _n or more.  Both return _s_1.

       _S_t_r_l_e_n returns the number of non-null characters in _s.

       _I_n_d_e_x  (_r_i_n_d_e_x)  returns  a  pointer  to the first (last) occurrence of
       character _c in string _s_, or zero if _c does not occur in  the string.



4th Berkeley Distribution        May 15, 1985                        STRING(3)