C++学习日志51------异常传播、重抛异常

• 一、异常传播
• 二、重抛异常

#include
using std::cout;
using std::endl;
class Exception1 {};
class Exception2{};
class Exception3{};
void f1();
void f2();
void f3();

int main()
{
	try 
	{
		f1();
		cout << "mainn";
	}
	catch (const std::exception& e)
	{
		cout << "catch f1()n";
	}
}
void f1()
{
	try 
	{
		f2();
		cout << "f1n";
	}
	catch (const Exception1& e)
	{
		cout << "catch f2()n";
	}
}

void f2()
{
	try
	{
		f3();
		cout << "f2n";
	}
	catch (const Exception2& e)
	{
		cout << "catch f3()n";
	}
}

void f3()
{
	throw Exception2();
}

结果如上图所示

#include
#include
#include
using std::cout;
using std::endl;
void f();
int main()
{
	try 
	{
		f();
	}
	catch (const std::exception& e)
	{
		cout << "catched exception : " << e.what() << endl;
	}
}
void f()
{
	try
	{
		throw std::logic_error("Throw in f()");
	}
	catch (const std::exception& e)
	{
		cout << "catched in f()" << endl;
		throw;
	}
	


}

结果如上图所示。