Program to find whether a given character is an alphabet,digit or any special character

#include<stdio.h>
#include<conio.h>

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

    getch();   
}


                                                 Output