C++ Programming/Code/Standard C Library/Functions/isalpha

< C++ Programming < Code < Standard C Library < Functions

isalpha

Syntax 
#include <cctype>
int isalpha( int ch );

The function isalpha() returns non-zero if its argument is a letter of the alphabet. Otherwise, zero is returned.

char c;
scanf( "%c", &c );
if( isalpha(c) )
  printf( "You entered a letter of the alphabet\n" );
Related topics
isalnum - iscntrl - isdigit - isgraph - isprint - ispunct - isspace - isxdigit
This article is issued from Wikibooks. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.