#include <stdio.h>
#include <stdlib.h>
#include <string.h>#define MAX_ACCOUNTS 100 // 设置账户上限
#define MAX_NAME_LEN 20 // 设置账户名长度上限struct Account {char name[MAX_NAME_LEN]; // 账户名double balance; // 账户余额
};// 定义全局变量
struct Account accounts[MAX_ACCOUNTS];
int num_accounts = 0;// 添加账户
void create_account() {if (num_accounts >= MAX_ACCOUNTS) {printf("账户数量已达上限，无法添加新账户。\n");return;}char name[MAX_NAME_LEN];double balance;printf("请输入要创建的账户名：\n");scanf("%s", name);printf("请输入账户余额：\n");scanf("%lf", &balance);// 创建新账户struct Account new_account;strcpy(new_account.name, name);new_account.balance = balance;accounts[num_accounts] = new_account;num_accounts++;printf("已成功创建账户：%s，初始余额为 %.2lf。\n", name, balance);
}// 账户存款
void deposit() {char name[MAX_NAME_LEN];double amount;printf("请输入要存款的账户名：\n");scanf("%s", name);// 查找账户int account_index = -1;for (int i = 0; i < num_accounts; i++) {if (strcmp(accounts[i].name, name) == 0) {account_index = i;break;}}if (account_index == -1) {printf("未找到账户：%s。\n", name);return;}printf("请输入存款金额：\n");scanf("%lf", &amount);accounts[account_index].balance += amount;printf("账户：%s，存入 %.2lf 元，现有余额 %.2lf 元。\n", name, amount, accounts[account_index].balance);
}// 账户取款
void withdraw() {char name[MAX_NAME_LEN];double amount;printf("请输入要取款的账户名：\n");scanf("%s", name);// 查找账户int account_index = -1;for (int i = 0; i < num_accounts; i++) {if (strcmp(accounts[i].name, name) == 0) {account_index = i;break;}}if (account_index == -1) {printf("未找到账户：%s。\n", name);return;}printf("请输入取款金额：\n");scanf("%lf", &amount);if (accounts[account_index].balance < amount) {printf("账户：%s，余额不足，取款失败。\n", name);return;}accounts[account_index].balance -= amount;printf("账户：%s，取出 %.2lf 元，现有余额 %.2lf 元。\n", name, amount, accounts[account_index].balance);
}// 转账
void transfer() {char from_name[MAX_NAME_LEN];char to_name[MAX_NAME_LEN];double amount;printf("请输入转出账户名：\n");scanf("%s", from_name);printf("请输入转入账户名：\n");scanf("%s", to_name);// 查找账户int from_index = -1;int to_index = -1;for (int i = 0; i < num_accounts; i++) {if (strcmp(accounts[i].name, from_name) == 0) {from_index = i;}if (strcmp(accounts[i].name, to_name) == 0) {to_index = i;}}if (from_index == -1 || to_index == -1 || from_index == to_index) {printf("转账失败：账户名不正确或相同。\n");return;}printf("请输入转账金额：\n");scanf("%lf", &amount);if (accounts[from_index].balance < amount) {printf("账户：%s，余额不足，转账失败。\n", from_name);return;}accounts[from_index].balance -= amount;accounts[to_index].balance += amount;printf("从账户：%s，将 %.2lf 元转入账户：%s，现有余额为 %.2lf 和 %.2lf 元。\n", from_name, amount, to_name, accounts[from_index].balance, accounts[to_index].balance);
}// 显示所有账户信息
void show_accounts() {if (num_accounts == 0) {printf("暂无账户信息。\n");return;}printf("所有账户信息如下：\n");for (int i = 0; i < num_accounts; i++) {printf("%d. 账户名：%s，余额：%.2lf 元。\n", i+1, accounts[i].name, accounts[i].balance);}
}int main() {while (1) {printf("欢迎来到银行管理系统，请选择要进行的操作：\n");printf("1. 创建账户\n");printf("2. 存款\n");printf("3. 取款\n");printf("4. 转账\n");printf("5. 显示账户信息\n");printf("6. 退出\n");int choice;scanf("%d", &choice);switch (choice) {case 1:create_account();break;case 2:deposit();break;case 3:withdraw();break;case 4:transfer();break;case 5:show_accounts();break;case 6:printf("谢谢使用银行管理系统，再见！\n");exit(0);default:printf("无效的选择，请重新输入。\n");}}return 0;
}
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