C语言实现ATM系统程序的完整代码

#include<stdio.h>
#include<string.h>
#include<conio.h>
#include<stdlib.h>
//开户信息
typedef struct _person
{
	char name[20];
	char account[20];
	char password[7];
	float money;
}person;
//结点
typedef struct _node
{
	person p;	//客户
	struct _node* next;
}node;
node* headnode = null;//链表头

/*----------------函数--------------------*/
void login();
void menu();
void register();
void loginmenu(node* pnode);
void findaccount(node* pnode);
void drawmoney(node* pnode);
void deposit(node* pnode);
void transfer(node* pnode);
void loginmenu(node* pnode);

//主菜单
void menu()
{
	printf("\n\t\t\t欢迎进入atm银行管理系统\n");
	printf("\t\t 1. 注册\n");
	printf("\t\t 2. 登录\n");
	printf("\t\t 3. 系统帮助\n");
	printf("\t\t 4. 查询账号\n");
	printf("\t\t 5. 退出\n");
}
//注册
void register()
{
	node* newnode = (node*)malloc(sizeof(node));
	newnode->next = null;
	newnode->p.money = 0;

	printf("请输入您的名字:");
	scanf("%s", newnode->p.name);
	printf("请输入您的密码:");
	scanf("%s", newnode->p.password);

	char password[7];
	printf("请再次输入您的密码:");
	scanf("%s", password);

	for (int i = 1; i < 4; i++)
	{
		if (strcmp(newnode->p.password, password) != 0)
		{
			printf("您输入的密码有误，还有%d次机会.\n", 3 - i);
			printf("请再次输入您的密码:");
			scanf("%s", password);
		}
		else
		{
			srand((unsigned int)time(null));
			sprintf(newnode->p.account, "%d%d%d%d%d", rand() % 9000 + 1000, rand() % 9000 + 1000,
				rand() % 9000 + 1000, rand() % 9000 + 1000, rand() % 900 + 100);
			//头插法
			if (headnode == null)
			{
				headnode = newnode;
			}
			else
			{
				newnode->next = headnode;
				headnode = newnode;
			}
			printf("\n\n\n\n\t\t\t\t恭喜你已经成功注册账户，以下是您的账户信息.\n");
			printf("\t\t\t\t姓名:%s\n", newnode->p.name);
			printf("\t\t\t\t账户:%s\n", newnode->p.account);
			printf("\t\t\t\t余额:%.2f\n", newnode->p.money);
			getch();
			return 1;
		}

	}
	printf("您的账号已被锁定，请稍后再试.");
	return 1;
}
//取款
void drawmoney(node* pnode)
{
	node* mnode = pnode;
	float money = 0;
	printf("欢迎进入atm银行管理系统\n");
	printf("请选择你取款金额\n");
	printf("100\t\t2000\n");
	printf("500\t\t5000\n");
	printf("10000\t\t其他金额\n");
	scanf("%f", &money);
	mnode->p.money = mnode->p.money - money;
	return mnode;	
}
//存款
void deposit(node* pnode)
{
	node* mnode = pnode;
	float money = 0;
	printf("请存取您的金额:");
	scanf("%f", &money);
	mnode->p.money = mnode->p.money + money;
	return mnode;
}
//转账
void transfer(node* pnode)
{
	node* tnode = headnode;
	char account[20];
	printf("请输入转账的号码:");
	scanf("%s", account);
	while (tnode != null)
	{
		if (strcmp(tnode->p.account, account) != 0)
		{
			tnode = tnode->next;
			continue;
		}
		else
		{
			float money = 0;
			printf("请输入您要转账的金额:");
			printf("100\t\t2000\n");
			printf("500\t\t5000\n");
			printf("10000\t\t其他金额\n");
			scanf("%f", &money);
			tnode->p.money = tnode->p.money + money;
			pnode->p.money = pnode->p.money - money;
			return 1;
		}
	}
	return 1;
}
//登录菜单
void loginmenu(node * pnode)
{

	while (1)
	{
		printf("欢迎进入atm银行管理系统\n");
		printf("请选择以下服务:\n");
		printf("1.取款\t\t2.查询\n");
		printf("3.存款\t\t4.转账\n");
		printf("5.修改密码\t6.退出\n");

		char ch = getch();
		switch (ch)
		{
		case '1':
			drawmoney(pnode);
			break;
		case '2':
			printf("您的账户余额为:%.2f", pnode->p.money);
			getch();
			break;
		case '3':
			deposit(pnode);
			break;
		case '4':
			transfer(pnode);
			break;
		case '5':
			break;
		case '6':
			return 0;
			break;
		default:
			break;
		}
		system("cls");
	}
	

}
//登录
void login()
{
	system("cls");
	node* pnode = headnode;

	char p_account[20];
	char p_password[7];
	printf("请输入您的卡号:");
	scanf("%s", p_account);

	while (pnode != null)
	{
		if (strcmp(p_account,pnode->p.account) != 0)
		{
			pnode = pnode->next;
			continue;
		}
		else
		{
			for (int i = 1; i < 4; i++)
			{
				printf("请输入您的密码:");
				scanf("%s", p_password);
				if (strcmp(p_password, pnode->p.password) != 0)
				{
					printf("您输入的密码有误，还有%d次机会.\n", 3 - i);
				}
				else
				{
					system("cls");
					loginmenu(pnode);
					return 1;
				}
			}
			printf("\n对不起，您输入的密码有误，请重新登录.\n");
			system("pause");
			return 1;

		}
		
	}
	return 1;
}
//系统帮助信息
void help()
{
	system("cls");
	printf( "\n\n\n\n\t——————————-----—---——atm系统帮助----------------------------------------\n"
			"\t1、初始界面：客户插卡前或者退卡后atm显示的界面，提示客户插卡操作及银行广告.\n"

			"\t2、身份认证：需要客户插入银行卡后输入密码来验证所有权.\n"

			"\t3、吞卡：客服若连续输入密码3次错误后，则将卡吞入atm内.\n"

			"\t4、账户：账户由银行卡的卡号、密码、银行系统用户信息组成.\n"

			"\t5、业务操作：由查询余额、取款、存款、转账、取卡等事项组成.\n"

			"\t6、查询余额：显示该账户中剩余金额.\n"

			"\t7、取款：根据客户输入的金额从账户中扣除相应的金额，客户可以提取相应数额的现金.\n"

			"\t8、存款：客户存入现金，账户根据现金数额增加剩余金额.\n"

			"\t9、转账：客户输入另外一个账户号码和金额，从本账户的余额中减去该金额，增加到那个账号中.\n"

			"\t10、打印凭条：凭条由日期，银行卡的卡号，交易流水号组成.\n"

			"\t11、取卡：客户取回银行卡.\n"
			"\t————————————————-------------------------------------------------------\n"
	);
	getch();
	return 1;
}
//查询账号
void findaccount(node* pnode)
{
	node* fnode = pnode;
	char accountname[7];
	printf("请输入账号姓名:");
	scanf("%s", accountname);

	while (fnode != null)
	{
		if (strcmp(accountname, fnode->p.name) != 0)
		{
			fnode = fnode->next;
			continue;
		}
		else
		{
			printf("该姓名的账户为:%s", fnode->p.account);
			return 1;
		}
	}
	printf("抱歉!该姓名未注册账号.");
	return 1;
}
int main()
{
	system("color b0");
		
	while (1)
	{
		system("cls");
		menu();
		char ch = _getch();
		switch (ch)
		{
		case '1':
			register();
			break;
		case '2':
			login();
			break;
		case '3':
			help();
			break;
		case '4':
			findaccount(headnode);
			getch();
			break;
		case '5':
			exit(0);
		default:
			break;
		}
	}
	return 0;
}