#include<iostream.h>
#include<string>
int main()
{
string string1, string2, string3, temp;
cout << "please input three strings";
cin>>string1>>string2>>string3;
if(string2 > string3)
{
temp = string2;
string2 = string3;
string3 = temp;
}
if(string1 <= string2)
cout << string1 << " " << string2 << " " << string3 << endl;
else if(string1 <= string3)
cout << string2 << " " << string1 << " " << string3 << endl;
return 0;
}
这个书上的例题哪里错了啊
修改如下:
#include<iostream.h>}