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

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