linked_list

#include <iostream>
#include <cstdlib>
#include <string>
using namespace std;

void add_node(void);
void print_node(void);

int count_node = 0;

struct node {
	string name;
	int age;
	struct node *next;
};

struct node *head, *ptr, *newptr;

int main() {
	int choose;
	cout << "=========Linked List 鏈結串鍊========="<<endl;
	cout << "    按 1 新增節點"<<endl;
	cout << "    按 2 顯示當前節點" << endl;
	cout << "    按 0 結束" << endl;
	cout << "======================================" << endl;
	cout << "    ->  ";
	while (cin >> choose) {
		switch (choose) {
		case 1:
			add_node();
			break;
		case 2:
			print_node();
			break;
		case 0:
			exit(0);
		}
	
	cout << "=========Linked List 鏈結串鍊=========" << endl;
	cout << "    按 1 新增節點" << endl;
	cout << "    按 2 顯示當前節點" << endl;
	cout << "    按 0 結束" << endl;
	cout << "======================================" << endl;
	cout << "    ->  ";

	}
	return 0;
}

void add_node(void) {
	if (count_node == 0) {
		newptr = new node;
		cout << "    輸入姓名 : ";
		cin >> (newptr->name);
		cout << "    輸入年齡 : ";
		cin >> (newptr->age);
		newptr->next = NULL;

		head = ptr = newptr;

		count_node++;
	}
	else {
		newptr = new node;
		cout << "    輸入姓名 : ";
		cin >> (newptr->name);
		cout << "    輸入年齡 : ";
		cin >> (newptr->age);
		newptr->next = NULL;

		ptr->next = newptr;
		ptr = newptr;

		count_node++;
	}
}

void print_node(void) {
	int i = 1;
	struct node* gg = head;
	while (gg != NULL) {
		cout << endl << "node " << i++;
		cout<<" ==> 姓名 : " << gg->name;
		cout << "\t   年齡 : " << gg->age << endl;
		gg = gg->next;
	}

	cout << endl;
}