第18章 - 异常处理

#include <iostream>
using namespace std;

int divide(int a, int b) {
    if (b == 0) {
        throw "除数不能为0！";  // 抛出异常
    }
    return a / b;
}

int main() {
    try {
        int result = divide(10, 0);
        cout << "结果：" << result << endl;
    } catch (const char* msg) {
        cout << "错误：" << msg << endl;
    }
    
    cout << "程序继续运行..." << endl;
    return 0;
}

class DivideByZeroException {
private:
    string message;
public:
    DivideByZeroException(string msg) : message(msg) {}
    string what() { return message; }
};

int safeDivide(int a, int b) {
    if (b == 0) {
        throw DivideByZeroException("除数为零！");
    }
    return a / b;
}

int main() {
    try {
        int result = safeDivide(10, 0);
    } catch (DivideByZeroException& e) {
        cout << "异常：" << e.what() << endl;
    }
}