《C++程序设计语言》5.9_13 定义一个struct Date 以保存日期的轨迹

/*---------------------------------------------------定义一个struct Date 以保存日期的轨迹。提供一些函数，从输入读Date，向输出写Date，以及用一个日期去初始化Date。----------------------------------------------------*/#include <iostream>#include <string>using std::cout;using std::cin;using std::endl;using std::string;const int N = 20;struct Date{int num[3];string name[3];};struct Date* input(){char ch;int j = 1;struct Date *idat = new struct Date[N];Date temp = {1992, 10, 10, "year", "month", "day"};*idat = temp;cout << "Please input your farvorate date\n" << "(the next line to input and 'q' to quit):";while ((ch = cin.get()) != 'q'){if (j < N){for (int i = 0; i < 3; i++)cin >> idat[j].num[i];idat[j].name[0] = "year";idat[j].name[1] = "month";idat[j].name[2] = "day";}j++;}for (; j < N; j++)for (int i = 0; i < 3; i++){idat[j].num[i] = 0;idat[j].name[i] = '/0';}return idat;}void show(struct Date* sdat){cout << "\nNow, let's show the date:\n";cout << sdat->name[0] << "" << sdat->name[1] << "" << sdat->name[2] << endl;int i = 0;while (sdat[i].num[0] != 0){cout << sdat[i].num[0] << "" << sdat[i].num[1] << "" << sdat[i].num[2] << endl;i++;}delete [] sdat;}int main(){struct Date *dat;dat = input();show(dat);return 0;}