Does a case-insensitive comparison of two 7-bit ASCII strings.

    Format

      #include  <strings.h>

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

1  –  Arguments

 s1

    The first of two strings to compare.

 s2

    The second of two strings to compare.

2  –  Description

    The strcasecmp function is case-insensitive. The returned
    lexicographic difference reflects a conversion to lowercase.

    The strcasecmp function works for 7-bit ASCII compares only. Do
    not use this function for internationalized applications.

3  –  Return Value

    n                  An integer value greater than, equal to, or
                       less than 0 (zero), depending on whether the
                       s1 string is greater than, equal to, or less
                       than the s2 string.