#include <iostream> using namespace std; int main() { char ch; ch =cin.get(); if((ch - 1)>=32 && (ch - 1)<= 126) cout <<ch - 1<<endl; else cout << "Input Error"<< endl; if((ch + 1)>= 32 && (ch + 1)<= 126) cout << ch+1<<endl; else cout << "Input Error"<<endl; return 0; }