cpp1.cpp

C++的作业很好用

#include <iostream>
using namespace std;
int main()
{
void change(char &,char &);
char str1[20],str2[20],str3[30];
char *p1=str1,*p2=str2,*p3=str3;
cout<<"input three line:"<<endl;
gets(p1);
gets(p2);
gets(p3);
if(str1>str2)change(*p1,*p2);
if(str1>str3)change(*p1,*p3);
if(str2>str3)change(*p2,*p3);
cout<<endl<<"Now, the order is:"<<endl;
cout<<str1<<endl<<str2<<endl<<str3<<endl;
return 0;
}
void change(char &st1,char &st2)
{
	char st;
	st = st1;
	st1 =st2;
	st2 = st;
}