구차니의 잡동사니 모음

#include < iostream >
using namespace std;
int main(int argc, char **argv)
{
		int a = 12;
		int b = 1;
		double c = 0;

		try
		{
			if(b == 0) throw(b);
			else throw(c);
		}
		catch(int e)
		{
			cout << "divide by zero. throw " << e << endl;
		}
		catch(double e)
		{
			cout << "good job. throw " << e << endl;
		}

        return 0;
}

#include < iostream >

using namespace std;

class temp
{
public:
        int a;

        temp(int b) : a(b) {}
        int operator+(int b, int c) { a += b; return a; }
};

int main(int argc, char **argv)
{
        temp tt(1);
        cout << tt + 3;

        return 0;
}

#include < iostream >

using namespace std;

class temp
{
public:
        int a;

        temp(int b) : a(b) {}
//      int operator+(int b) { a += b; return a; }
        friend int operator+(temp t, int b)
        {
                t.a = t.a + b;
                return t.a;
        }
};

int main(int argc, char **argv)
{
        temp tt(1);
        cout << tt + 3;

        return 0;
}

class student
{
	const int id;
	int age;
	char name[20];
	char subject[30];

public:
	student()
	{
	}

	student(int _id) : id(_id)
	{

	}

	student(int _id, int _age, char *_name, char *_subject) : id(_id)
	{
		age = _age;
//		id = _id;
		strcpy(name, _name);
		strcpy(subject, _subject);
	}

#include < iostream >

using namespace std;

class test
{
	int a1, a2;
	int a;

public:
	test()
	{
	}

	test(int b)
	{
		cout << "constructor called" << endl;
		a = b;
	}

	void dump()
	{
		cout << a1 << ' ' << a2 << ' ' << a << endl;
	}
};

void main()
{
	cout << "tt" << endl;
	test tt;

	cout << "t2(11)" << endl;
	test t2(11);

	cout << "tt = 11" << endl;
	tt = 11;

	cout << "tt = 55" << endl;
	tt = 55;

	tt.dump();
	t2.dump();
}