#include<iostream.h>
#include<conio.h>
#include<string.h>

class casechng
{
	int len;
	char str[30];

  public:
	void getdata(void);
	void change_case(void);
};

void casechng::getdata(void)
{
cout<<"\nEnter a String: ";
cin.getline(str,30);
}

void casechng::change_case(void)
{
len=strlen(str);
cout<<"\nAfter Changing the Case: ";
for(int i=0;i<=len;i++)
{
if((str[i]>=65)&&(str[i]<=90))
	{
	char k=str[i]+32;
	cout<<k;
	}
else if ((str[i]>=97)&&(str[i]<=122))
	{
	char l=str[i]-32;
	cout<<l;
	}
}
}


void main()
{
clrscr();
	casechng s;
	s.getdata();
	s.change_case();
	cout<<"\n\t Written By: Sujit Kr Nayak\n\t Roll No: ELD09006";
	getch();
}