Compares two ASCII character strings and returns a negative,
    0, or positive integer, indicating that the ASCII values of the
    individual characters in the first string are less than, equal
    to, or greater than the values in the second string.

    Format

      #include  <string.h>

      int strcmp  (const char *str_1, const char *str_2);

  Additional Information (explode) :

• Arguments
• Description
• Return Values