1 //2022版  C 解题代码
 2 #include <stdio.h>
 3 #include <stdlib.h>
 4 #include <string.h> //strcmp 头文件
 5 
 6 #define M 50
 7 typedef struct book{
 8     char name[M];
 9     float price;
10     int classification;
11 }book;
12 
13 int main()
14 {    
15     int n = 0;        
16     book s[50], tmp;
17     int i, j, max;
18     
19     scanf("%d",&n); //题目要求
20     
21     for (i = 0; i < n; i++)
22         scanf("%s%f%d", s[i].name, &s[i].price, &s[i].classification);
23     
24     //选择排序
25     for (i = 0; i < n-1; i++)
26     {
27         max = i;
28         for (j = i + 1; j <n; j++)
29             if ( s[j].price == s[max].price && 0 > strcmp( s[j].name,s[max].name ) //价格相等 比较字符串 
30                 || s[j].price < s[max].price) //或者比较价格
31                 max = j;
32         if( max!=i ) //交换条件
33         {
34             tmp = s[i];
35             s[i] = s[max];
36             s[max] = tmp;
37         }
38     }
39     for (i = 0; i < n; i++)
40         printf("%s,%.2f,%d\n", s[i].name, s[i].price, s[i].classification);
41     return 0;    
42 }

 1 //2022版  C++ 解题代码
 2 #include <iostream>
 3 #include <cstring>
 4 using namespace std;
 5 
 6 const int M = 50;
 7 struct book
 8 {
 9     char name[M];
10     float price;
11     int classification;    
12     bool operator <(const struct book &b)const //运算符重载
13     {
14         if( b.price == price)
15             return  0 < strcmp( b.name,name);
16         return b.price > price;
17     }
18 }; 
19 
20 int main()
21 {    
22     int n = 0;    
23     book s[50], tmp;
24     int i, j, max;
25     
26     cin >> n; //题目要求
27     
28     for (i = 0; i < n; i++)
29         cin >> s[i].name >> s[i].price >> s[i].classification;
30     
31     //选择排序
32     for (i = 0; i < n; i++)
33     {
34         max = i;
35         for (j = i + 1; j <n; j++)
36             if ( s[j] < s[max] ) //或者比较价格
37                 max = j;
38         if( max!=i ) //交换条件
39         {
40             tmp = s[i];
41             s[i] = s[max];
42             s[max] = tmp;
43         }
44     }
45     for (i = 0; i < n; i++)
46         printf("%s,%.2f,%d\n", s[i].name, s[i].price, s[i].classification);
47     return 0;    
48 }

 1 #include <stdio.h> 
 2 #include <string.h>
 3 
 4 struct clock
 5 {
 6     int hour;
 7     int minute;
 8     int second;
 9 };
10 typedef struct clock CLOCK;
11 
12 int main()
13 {
14     CLOCK c;
15     int ret = scanf("%d,%d,%d",&c.hour,&c.minute,&c.second);
16     if(ret!=3 || c.hour>=24 || c.minute>=60 || c.second>=60){
17         printf("error");
18     }
19     else{
20         printf("%02d:%02d:%02d",c.hour,c.minute,c.second);
21     }
22     return 0;
23 }