#include<bits/stdc++.h> using namespace std; int main() { /** int a=9; int b[100]={0,1,2};//数字容器里面装的是数字 //字符数组 容器里面装的字符 ‘’单引号 char c='1';// '0' 48 'A' 65 'a' 97 char d[长度];//容器的个数 **/ char n; n=cin.get(); //n+1;n-1 if((n-1)>=32 and (n-1)<=126){ cout<<n-1; }else{ cout<<"Input Error!"; } cout<<endl; if((n+1)>=32 and (n+1)<=126){ cout<<n+1; }else{ cout<<"Input Error!"; } return 0; }