ATM

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

//个人信息
typedef struct Person {
	char name[20];
	char account[20];
	char password[8];
	float money;
} Person;

typedef struct Node {
	Person p;
	struct Node *next;
} Node, *NodeList;

NodeList head = NULL;

//开函数
void Create_account() {
	NodeList pNewNode = (NodeList)malloc(sizeof(Node));
	pNewNode->next = NULL;
	pNewNode->p.money = 0.0;

	printf("请输入你的姓名，账号和密码\n");
	scanf("%s", pNewNode->p.name);
	scanf("%s", pNewNode->p.account);
	scanf("%s", pNewNode->p.password);

	if (head == NULL)
		head = pNewNode;
	else {
		NodeList p = head;
		while (p->next != NULL)
			p = p->next;
		p->next = pNewNode;
	}
	printf("你的账号信息如下\n");
	printf("\t姓名:%s\n", pNewNode->p.name);
	printf("\t账号:%s\n", pNewNode->p.account);
	printf("\t钱款:%f\n", pNewNode->p.money);
	printf("恭喜你开成功！！！\n");
	printf("---------------------------------\n");
	printf("|\t 1.开\t|\t 2.登录\t|\n");
	printf("|\t 3.退出\t|\n");
	printf("---------------------------------\n");
	getchar();
}

//登录函数
int Login(char *account, char *password) {
	NodeList p = head;
	while (p != NULL) {
		if (strcmp(p->p.account, account) == 0 && strcmp(p->p.password, password) == 0)
			return 1;
		p = p->next;
	}
	return 0;
}

//存款函数
void Cun_money(char *account, float money) {
	NodeList p = head;
	while (p != NULL) {
		if (strcmp(p->p.account, account) == 0) {
			p->p.money += money;
			printf("存款成功，当前余额为%.2f\n", p->p.money);
			return;
		}
		p = p->next;
	}
}

//取款函数
void Qu_money(char *account, float money) {
	NodeList p = head;
	while (p != NULL) {
		if (strcmp(p->p.account, account) == 0) {
			if (p->p.money < money)
				printf("余额不足，取款失败\n");
			else {
				p->p.money -= money;
				printf("取款成功，当前余额为%.2f\n", p->p.money);
			}
			return;
		}
		p = p->next;
	}
}

//显示账户信息函数
void Display(char *account) {
	NodeList p = head;
	while (p != NULL) {
		if (strcmp(p->p.account, account) == 0) {
			printf("姓名：%s\n", p->p.name);
			printf("账号：%s\n", p->p.account);
			printf("余额：%.2f\n", p->p.money);
			return;
		}
		p = p->next;
	}
}

int main() {
	printf("****************************************\n");
	printf("**********欢迎使用ATM存取系统***********\n");
	printf("****************************************\n");
	printf("---------------------------------\n");
	printf("|\t 1.户\t|\t 2.登录\t|\n");
	printf("|\t 3.退出\t|\n");
	printf("---------------------------------\n");
	while (1) {


		char ch = getchar();
		getchar();
		switch (ch) {
			case '1':
				Create_account();
				break;
			case '2': {
				char Account[20], Password[8];
				printf("请输入账号和密码\n");
				scanf("%s", Account);
				scanf("%s", Password);
				getchar();
				if (Login(Account, Password)) {
					printf("登录成功\n");
					printf("-------------------------------------------------\n");
					printf("| 1.存款\t| 2.取款\t| 3.查询\t| 4.退出 |\n");
					printf("-------------------------------------------------\n");
					while (1) {
						char op = getchar();
						if (op == '1') {
							float money;
							printf("请输入存款金额\n");
							scanf("%f", &money);
							Cun_money(Account, money);
							printf("-------------------------------------------------\n");
							printf("| 1.存款\t| 2.取款\t| 3.查询\t| 4.退出 |\n");
							printf("-------------------------------------------------\n");
							continue;
						} else if (op == '2') {
							float money;
							printf("请输入取款金额\n");
							scanf("%f", &money);
							Qu_money(Account, money);
							printf("-------------------------------------------------\n");
							printf("| 1.存款\t| 2.取款\t| 3.查询\t| 4.退出 |\n");
							printf("-------------------------------------------------\n");
							continue;
						} else if (op == '3') {
							Display(Account);
							printf("-------------------------------------------------\n");
							printf("| 1.存款\t| 2.取款\t| 3.查询\t| 4.退出 |\n");
							printf("-------------------------------------------------\n");
							continue;
						}

						else if (op == '4') {
							system("CLS");
							printf("****************************************\n");
							printf("**********欢迎使用ATM存取系统***********\n");
							printf("****************************************\n");
							getchar();
							break;
						}
					}

				} else
					printf("账号或密码错误\n");
				printf("---------------------------------\n");
				printf("|\t 1.户\t|\t 2.登录\t|\n");
				printf("|\t 3.退出\t|\n");
				printf("---------------------------------\n");
			}
			break;
			case '3':
				printf("谢谢使用！\n");
				exit(0);

				break;
		}
	}
}