C 语言实现银行账户类及多场景功能测试代码解析

```c #include <stdio.h> #include <stdlib.h> typedef struct BankAccount { double balance; } BankAccount; BankAccount* openaccount(double initial_balance) { BankAccount* account = (BankAccount*)malloc(sizeof(BankAccount)); account->balance = initial_balance; return account; } void deposit(BankAccount* account, double amount) { account->balance += amount; } void withdraw(BankAccount* account, double amount) { if (account->balance < amount) { printf("余额不足，无法取款。 "); exit(1); } account->balance -= amount; } double getbalance(BankAccount* account) { return account->balance; } void closeaccount(BankAccount* account) { free(account); } int main() { // 方法①开户-存款20-取款19.89-查询余额 BankAccount* account1 = openaccount(0); deposit(account1, 20); withdraw(account1, 19.89); printf("账户余额：%.2f ", getbalance(account1)); closeaccount(account1); // 方法②开户-存款20-取款21.01-查询余额 BankAccount* account2 = openaccount(0); deposit(account2, 20); withdraw(account2, 21.01); // 这里会抛出异常并退出程序 closeaccount(account2); // 方法③存款20-开户-取款19.89-查询余额 BankAccount* account3 = openaccount(0); deposit(account3, 20); withdraw(account3, 19.89); printf("账户余额：%.2f ", getbalance(account3)); closeaccount(account3); // 方法④取款20-开户-存款20.01-查询余额 BankAccount* account4 = openaccount(0); withdraw(account4, 20); // 这里会抛出异常并退出程序 deposit(account4, 20.01); printf("账户余额：%.2f ", getbalance(account4)); closeaccount(account4); return 0; } ``` ######[AI写代码神器 | 579点数解答 | 2024-08-08 14:48:54]