05-10课堂检测

#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <cstdio>
using namespace std;
const int N = 110;
int a[N][N];
void quick_sort() {
	for (int i = 0; i < 5; i++) {
		int index = i;
		for (int j = i+1; j < 5 ;j++) {
			if (a[index][1] > a[j][1]) {
				index = j;
			}
			int item = a[index][1];
			a[index][1] = a[i][1];
			a[i][1] = item;

			item = a[index][0];
			a[index][0] = a[i][0];
			a[i][0] = item;
		}
	}
	return;
}
int main(){
	for (int i = 0; i < 5; i++) {
		for (int j = 0; j < 2; j++) {
			cin >> a[i][j];  //输入
		}
	}
	quick_sort();
	cout << endl;  //输出换行
	for (int i = 0; i < 5; i++) {
		for (int j = 0; j < 2; j++) {
			cout << a[i][j]<<' ';   //输出
		}  
		cout << endl;  //输出
	}
	return 0;
}