/* prints the number of upercase & lowercase in a given string.  */
 
#include <stdio.h>
#include <string.h>
#include <ctype.h>
 

main()
{  char str[81];
   int len, i, nupper=0, nlower=0;
 
   printf("Enter your string >");
   gets(str);
 
   len=strlen(str);
 
   for (i=0; i<=len; i++)
       if isalpha(str[i])
            if (isupper(str[i]))
               nupper++;
            else
               nlower++;
 

   printf("Number of lower case = %d\n", nlower);
   printf("Number of upper case = %d\n", nupper);

   return 0;
 }