1.验证表

C++完整代码

#include 
#include 
#include 
using namespace std;
 
struct Student {
	int id;
	string name;
};
 
bool compareStudents(const Student& s1, const Student& s2) {
	return s1.id < s2.id;
}
 
int main() {
	vector list1, list2;
 
	//输入表LIST1的学生记录
	int n;
	cin >> n;
	for (int i = 0; i < n; i++) {
		Student student;
		cin >> student.id;
		cin >> student.name;
		list1.push_back(student);
	}
 
	//输入表LIST2的学生记录
	cin >> n;
	for (int i = 0; i < n; i++) {
		Student student;
		cin >> student.id;
		cin >> student.name;
		list2.push_back(student);
	}
	if (list2.empty()) {
		cout << "the LIST2 is NULL." << endl;
		return 0;
	}
 
	// 对表LIST1和表LIST2进行排序
	sort(list1.begin(), list1.end(), compareStudents);
	sort(list2.begin(), list2.end(), compareStudents);
 
	// 循环遍历两个表的学生记录并比较
	vector notInList1;
	for (const Student& student2 : list2) {
		bool found = false;
 
		for (const Student& student1 : list1) {
			if (student2.id == student1.id && student2.name == student1.name) {
				found = true;
				break;
			}
		}
		if (found == false) {
			notInList1.push_back(student2);
		}
	}
 
	// 输出结果
	if (notInList1.empty()) {
		cout << "the records of LIST2 are all in the LIST1." << endl;
	}
	else {
		for (const Student& student : notInList1) {
			cout  << student.id << " " << student.name << " is not in LIST1." << endl;
		}
	}
 
	return 0;
 
}