今天是个伟大日子

做了个实验

#include<iostream>
#include<cstdio>
using namespace std;
int main()
{  string a;
   char  b[100];
   char c;
   string d[100];
   a="li chen shang";
   b[1]='li chen shang';
   c='li chen shan';
   d[1]="li chen shang";
   cout<<a<<endl;
   cout<<b[1]<<endl;
   cout<<c<<endl;
   cout<<d[1]<<endl;
   return 0;
}#include<iostream>
#include<