#include<stdio.h>

void main() {
    char character;
    
    printf("n Enter Ant One Character: ");
    scanf("%c", &character);
    if ((character >= 'A' && character <= 'Z') || (character >= 'a' && character <= 'z')){
        printf("n You have entered an alphabet");
    }
    else{
        if (character >= '0' && character <= '9')
            printf("n You entered a digit");
        else
            printf("n You entered a special character");
    }
}

Enter Any One Character: #
You entered a special character

Enter Any One Character: 89
You entered a digit

Enter Any One Character: Z
You have entered an alphabet