8.1.4 Support for String Handling

The library includes the header files <string.h> and <strings.h>, which provide the following functions for string handling beyond those required.

• string.h
  • strdup(), which duplicates a string by dynamically allocating memory and copying the string to this allocated memory
  • strcmp() and strncmp(), which perform case-sensitive string comparisons
  • memcpy(), which copies memory from one location to another
  • memcmp(), which compares sections of memory
• strings.h
  • bcmp(), which is equivalent to memcmp()
  • bcopy(), which is equivalent to memmove()
  • bzero(), which is equivalent to memset(.., 0, ...);
  • ffs(), which finds the first bit set and returns the index of that bit
  • index(), which is equivalent to strchr()
  • rindex(), which is equivalent to strrchr()
  • strcasecmp() and strncasecmp(), which perform case-insensitive string comparisons