重写C代码以抛出C++异常？

#include <cstdio>
#include <exception>

// 自定义异常类
class MyException : public std::exception {
public:
    const char* what() const throw() {
        return "MyException: Something went wrong!";
    }
};

// C++代码重写C函数，抛出异常
void myFunction() {
    try {
        // C++代码中调用C库函数
        FILE* file = fopen("myfile.txt", "r");
        if (file == nullptr) {
            // 抛出自定义异常
            throw MyException();
        }
        // 其他操作...
    } catch (const std::exception& e) {
        // 捕获并处理异常
        printf("%s\n", e.what());
    }
}

int main() {
    myFunction();
    return 0;
}