test

#include<iostream>using namespace std;class stock{private:int money;int price[12];public:stock();void show();~stock(){}};stock::stock()                 //自动运行构造函数{cout << "invest money:";cin >> money;for (int i = 0; i < 12; i++){cout << "price of day " << i + 1 << ":";cin >> price[i];}}void stock::show(){int max = 0, num, start, end, value, pos1, pos2;for (int i = 0; i<11; i++){num = money / price[i];if (num >= 1){start = num*price[i];for (int j = i + 1; j<12; j++){end = num*price[j];value = end - start;if (value>max){pos1 = i;pos2 = j;max = value;}}}}if (max == 0)cout << "IMPOSSIBLE" << endl;elsecout << "buy:"<<pos1 + 1 << " sell:" << pos2 + 1 << " earn:" << max << endl;}int main(){int n;cout << "input exp number:";cin >> n;stock *a = new stock[n];        //创建多个stock对象，自动运行各自的构造函数for (int i = 0; i<n; i++){a[i].show();}delete[]a;return 0;}