/* Whether the character entered through 
   the keyboard is a Upper case alphabet or not. 
*/
#include<stdio.h>
main()
{
      char c;
      printf("please enter a upper case letter \t");
      scanf("%c", &c);
      if(c >= 65 && c <= 90)
           printf("Upper case letter \n");
      else
          printf("Other \n");
      system("pause");      
}