Practical 9 Part B Question 1

#include <iostream>
#include <cctype>
using namespace std;

int main(void)
{
    char ch, next_ch;

    cout <<"Enter an alphabetic character: ";
    cin >> ch;

    if (isalpha (ch))
    {
            if ((ch == 'z'))
                next_ch = 'a';
            else if (ch == 'Z')
                next_ch = 'A';
            else
                next_ch = ch + 1;
        cout << "Next character of " << ch << "is" << next_ch << ".\n";
    }
    else
        cout << ch <<"is not alphabetic character.\n";
    return 0;
}