C Programming Character Is Number, Alphabet, Operator Or Special Character

C Program To Find Input Character Is Number, Alphabet, Operator Or Special Character

This c program uses 'if-else if' logic to determine and returns the input character is number, alphabet, operator or special character.

#include<stdio.h>                                                               
                                                                                
void main()                                                                     
{                                                                               
    char ch;                                                                    
    printf("Enter character: ");                                                
    scanf("%c",&ch);                                                            
                                                                                
    if( (ch>='a' && ch<='z') || (ch>='A' && ch<='Z'))                           
        printf("character: %c is an alphabet.\n",ch);                           
    else if(ch >= '0' && ch <= '9')                                             
        printf("character: %c is digit.\n", ch);                                
    else if (ch == '+' || ch == '-' || ch == '*' || ch =='/' || ch == '%')      
        printf("character: %c is an operator.\n", ch);                          
    else                                                                        
        printf("character: %c is special character.\n",ch);                     
}                                                                  
                                                                                  
Output:
$ cc is_character.c
$ ./a.out 
Enter character: a
character: a is an alphabet.
$ ./a.out 
Enter character: +
character: + is an operator.
$ ./a.out 
Enter character: 2
character: 2 is digit.
$ ./a.out 
Enter character: #
character: # is special character.

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