#include<stdio.h>
int main()
{
   char str[50];
   int i;
   printf("\nEnter a string : ");
   scanf("%s",&str);
   for(i=0;str[i]!='\0';i++)
   {
      if(str[i]>='a'&&str[i]<='z')
      {
            str[i]=str[i]-32;
      }
   }
   printf("\nString in Upper Case = %s",str);
   for(i=0;str[i]!='\0';i++)
   {
       if(str[i]>='A'&&str[i]<='Z')
       {
           str[i]=str[i]+32;
       }
   }
   printf("\nString in Lower Case = %s",str);
   return 0;
}