13.8.cpp

这是C++的一部分练习程序!对初学者有一定的帮助作用。

#include <iostream.h>
#include <string.h>
class student
{
  public:
	student(char *s,int n)
	{ 
		strcpy(name,s);
		age=n;
		cout<<"Constructor called."<<age<<endl;
	}
	~student()
	{  cout<<"Destructor called."<<age<<endl;  }
	void getAge()
	{
		if(age<0)
			throw age;
		else
			cout<<name<<','<<age<<endl;
	}
  private:
	char name[20];
	int age;
};
void fun()
{
	student s1("Ma",20);
	s1.getAge();
	student s2("Li",-19);
	s2.getAge();
}
void main()
{
	try
	{
		fun();
	}
	catch(int n)
	{
		cout<<"age="<<n<<", Age error!"<<endl;
	}
}