#include<iostream>
#include<string>
using namespace std;
int main()
{
  int i,j;
  string str[5]={"we","go","to","school","today"};
  string t;
  for(i=0;i<5;i++)
    for(j=0;j<5-i;j++)
    {
     if(str[j]>str[j+1])
     {
      t=str[j];
      str[j]=str[j+1];
      str[j+1]=t;
     }
    }

  for(i=0;i<5;i++)
    cout<<str[i]<<" ";
  cout<<endl;
  return 0;
}

好复杂的感觉

不是只有5个字符串吗，为什么要定义str[6]，还有str[0]为什么是空格？

#include<iostream>
#include<string>
using namespace std;
int main()
{
  int i,j;
  string str[5]={"we","go","to","school","today"};//×￠
  string t;
  for(i=0;i<4;i++)
    for(j=0;j<4-i;j++)
    {
     if(str[j]>str[j+1])
     {
      t=str[j];
      str[j]=str[j+1];
      str[j+1]=t;
     }
    }

  for(i=0;i<5;i++)
    cout<<str[i]<<" ";
  cout<<endl;
  return 0;
}