eg2.cpp

C++课程更学习...对于初学者很有好出

// eg2.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include <stdio.h>
#include <string.h>

// 类
class Student
{
private: // 私有
	char  m_sName[40];   // 姓名
	int   m_nID;         // 学号
	int   m_nAge;        // 年龄
	int   m_nClassNo;    // 班号 

public: // 公有

	// 构造函数
	Student(char* sName, int nID,
		int nAge, int nClassNo)
	{
		strcpy(m_sName,sName);
		m_nID = nID;
		m_nAge = nAge;
		m_nClassNo = nClassNo;

		printf("%s 构造函数4被调用了!\n",
			m_sName);
	}

	// 构造函数
	Student(char* sName)
	{
		strcpy(m_sName,sName);
		m_nID = 0;
		m_nAge = 0;
		m_nClassNo = 0;

		printf("%s 构造函数1被调用了!\n",
			m_sName);
	}

	// 默认构造函数
	Student()
	{
		strcpy(m_sName,"无名氏");
		m_nID = 0;
		m_nAge = 0;
		m_nClassNo = 0;

		printf("%s 默认构造0被调用了!\n",
			m_sName);
	}

	// 析构函数
	~Student()
	{
		printf("%s 析构函数被调用了!\n",
			m_sName);
	}

	void InitStudent(char* sName, int nID,
		int nAge, int nClassNo)
	{
		strcpy(m_sName,sName);
		m_nID = nID;
		m_nAge = nAge;
		m_nClassNo = nClassNo;
	}

	void ShowInfo()
	{
		printf("姓名: %s 学号:%d 年龄:%d 班号:%d\n", 
			m_sName, m_nID, m_nAge, m_nClassNo);
	}

	void UnitStudent()
	{
		// Nothing need to do.
	}

	char* GetName()
	{
		return m_sName;
	}

	int GetID()
	{
		return m_nID;
	}

	int GetAge()
	{
		return m_nAge;
	}

	int GetClassNo()
	{
		return m_nClassNo;
	}

	void SetAge(int nAge)
	{
		if (nAge > 0 && nAge < 150)
			m_nAge = nAge;
	}
};

Student Jackson("Jackson");

int main(int argc, char* argv[])
{
	int i = 4;
	Student Jack("Jack", 30, 21, 101);// 触发构造函数
	Student Tom("Tom"); // 触发构造函数
	{
		int j = 5;
		Student Test("test");
		static Student Test2("test2");
	}
	Student Jane; // 触发默认构造函数

	return 0;
}