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

void main()
{
clrscr();
char charac;
cout << “Enter your letter : ” << endl;
cin>>charac;
cout << “The 2 letters are : ” << endl;
cout << (char)(charac-1) << endl;
cout << (char)(charac+1) << endl;
getch();
}

This program takes in a letter charac of the English alphabet as a screen input from the user.
It then determines its previous letter and next letter and prints it out using the ‘cout’ command.

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