To find a character is no./letter/special character

Program:

#include<stdio.h>
#include<conio.h>
void main()
{
    char ch;
    clrscr();
    printf("Enter a charatcer : ");
    scanf("%c", &ch);
    if (ch >= 65 && ch <= 90)
    printf("\nEntered character is a uppercase letter") ;
    else if(ch >= 97 && ch <= 122)
    printf("\nEntered character is a lowercase letter");
    else if(ch >= 48 && ch <= 57)
    printf("\nEntered character is a number");
    else
    printf("\nEntered character is a special character");
    getch();
}

Output:

Case: 1

Enter a charatcer : b
Entered character is a lowercase letter

Case: 2

Enter a charatcer : V
Entered character is a uppercase letter

Case: 3

Enter a charatcer : 2
Entered character is a number

Case: 4

Enter a charatcer : #
Entered character is a special character