#include <iostream.h>
#include <conio.h>
void main()
{
        clrscr();
	char letter;
	cout<<"Insert one letter:"<<endl;
	letter = getch();
	if (letter<90)
	{
	letter++;
	cout<<"Next Letter Is:"<<endl;
	putch(letter);
	}
	if(letter==90)
	{
	cout<<"Back to start.";
	putch(65);
	}
}