C Program to Check Character Type

C Program To Check Character Type

This program is used to check whether input character is alpha-numeric or not.

#include<stdio.h>                                                                
#include<ctype.h>                                                             
                                                                                
void main()                                                                     
{                                                                               
 char character;                                                                
 printf("Enter any character: ");                                               
 character = getchar();                                                         
 if(isalpha(character) > 0)                                                     
 {                                                                              
  printf("Character is letter\n");                                              
 }                                                                              
 else if(isdigit(character) >0)                                                 
 {                                                                              
  printf("Character is a digit\n");                                             
 }                                                                              
 else                                                                           
 {                                                                              
  printf("Character is not alphanumeric");                                      
 }                                                                              
}                                                                 
                                                                                  

$ cc character-type.c
$ ./a.out 
Enter any character: s
Character is letter
$ ./a.out 
Enter any character: 3
Character is a digit
$ ./a.out 
Enter any character: +
Character is not alphanumeric