String Handling Functions In C

String Handling Functions In C

With every C compiler a large set of useful string handling library functions are provided. The following figure illustrates the more commonly used functions along with their
purpose.

1.strlen: Finds length of a string
2.strlwr: Converts a string to lower case
3.strupr: Converts a string to upper case
4.strcat: Appends one string at the end of the other
5.strncat: Appends first n characters of a string at
  the end of another
6.strcpy: Copies a string into another
7.strncpy: Copies first n characters of one string into
 another
8.strcmp: Compares two strings
9.strncmp: compares first n characters of two strings
10.strcmpi: compares two strings without regard to case
11.strnicmp: compares first n characters of two strings
   without regard to case
12.strdup: duplicates a string
13.strchr: finds first occurrence of a given character in a
  string
14.strrchr: Finds last occurrence of a given character in a
   string
15.strstr: Finds first occurrence of a given string in another
   string
16.strset: Sets all characters of string to a given character
17.strnset: Sets first n characters of a string to a given
 character
18.strrev: Reverses string
strlen()
strcpy()
strcat()
strcmp()