C – ispunct() function

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  • ispunct( ) function in C language checks whether given character is punctuation or not. Syntax for ispunct( ) function is given below.

int ispunct( int x );

Example program for ispunct() function in C:

Output:

Character is a punctuation character

Other Int, Char validation functions in C programming language:

  • All “int, char validation functions” used in C programming language are given below. “ctype.h” header file support all these functions in C language.
  • Click on each function name below for detail description and example programs.
Functions Description
isalpha() checks whether character is alphabetic
isdigit() checks whether character is digit
isalnum() Checks whether character is alphanumeric
isspace() Checks whether character is space
islower() Checks whether character is lower case
isupper() Checks whether character is upper case
isxdigit() Checks whether character is hexadecimal
iscntrl() Checks whether character is a control character
isprint() Checks whether character is a printable character
ispunct() Checks whether character is a punctuation
isgraph() Checks whether character is a graphical character
tolower() Checks whether character is alphabetic & converts to lower case
toupper() Checks whether character is alphabetic & converts to upper case

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