2023.7.10

 1 import java.util.Scanner;
 2 
 3 public class test
 4 {
 5     public static void main(String[] args)
 6     {
 7         int i = 0;
 8         int sum = 0;
 9       
10         while(i<100)
11         {
12             i++;
13             sum = sum+i;
14         }
15       
16         System.out.println(sum);
17     }
18 }
19 //do  while循环  先执行后判断，至少执行一遍
20 //while 先判断后执行

 1 #include<iostream>
 2 #include <iomanip>
 3 #include<cstdio>
 4 #include<cmath>
 5 #include<cstring>
 6 using namespace std;
 7 class Student
 8 {
 9 public:
10     int sex;
11     string name;
12 };
13 void test01()
14 {
15     int n;
16     cin >> n;
17     Student* s = new Student[n];
18     for (int i = 0; i < n; i++)
19     {
20         cin >> s[i].sex >> s[i].name;
21     }
22     int flag[50] = { 0 };
23     for (int i = 0; i < n; i++)
24     {
25         for (int j = n - 1; j >= 0; j--)
26         {
27             if (flag[i] == 0 && flag[j] == 0 && s[i].sex != s[j].sex)
28             {
29                 cout << s[i].name << " " << s[j].name << endl;
30                 flag[i] = 1;
31                 flag[j] = 1;
32             }
33         }
34     }
35     delete[] s;
36 }
37 int main()
38 {
39     test01();
40     return 0;
41 }