C Program :
A character is input through keyboard. Write a prog. to check character is
uppercase or lowercase letter.

C Programming -->
 
/* PROG. TO CHECK GIVEN CHARACTER IS SMALLCASE OF UPPERCASE
LETTER */
#include<stdio.h>
#include<conio.h>
main()
{
char ch;
clrscr();
printf("enter a character");
scanf(" (oc",&ch);
if(ch>=65 && ch<=90)
printf("%c is uppercase alphabet" ,ch);
else if(ch>=97 && ch<= 122)
printf("%c is smallcase alphabet",ch);
else
printf("%c is not an alphabet",ch);
getch();
}