一些项目——输入三个字符串，按由小到大的顺序输出

Description

Input

Output

Sample Input

cde
afg
abc

Sample Output

abc
afg
cde
abc
afg
cde

#include <iostream>
#include <cstring>
using namespace std;
void sort1(char *s1,char *s2,char *s3)
{
    char t[100];
    if(strcmp(s1,s2)>0)
    {
        strcpy(t,s1);
        strcpy(s1,s2);
        strcpy(s2,t);
    }
    if(strcmp(s2,s3)>0)
    {
        strcpy(t,s3);
        strcpy(s3,s2);
        strcpy(s2,t);
    }
    if(strcmp(s1,s2)>0)
    {
        strcpy(t,s1);
        strcpy(s1,s2);
        strcpy(s2,t);
    }
}
void sort2(string &s1,string &s2,string &s3)
{
    string t;
    if(s1>s2)
    {
        t=s1;
        s1=s2;
        s2=t;
    }
    if(s2>s3)
    {
        t=s3;
        s3=s2;
        s2=t;
    }
    if(s1>s2)
    {
        t=s1;
        s1=s2;
        s2=t;
    }
}
int main()
{
    void sort1(char *,char *,char *);
    void sort2(string &,string &,string &);
    char s1[100],s2[100],s3[100];
    char *p1,*p2,*p3;
    string r1,r2,r3;
    cin>>s1>>s2>>s3;
    r1=string(s1);
    r2=string(s2);
    r3=string(s3);
    p1=s1;
    p2=s2;
    p3=s3;
    sort1(p1,p2,p3);
    cout<<s1<<endl<<s2<<endl<<s3<<endl;
    sort2(r1,r2,r3);
    cout<<r1<<endl<<r2<<endl<<r3<<endl;
    return 0;
}