1.練習程式碼-找出錯誤

#include "stdafx.h"
#include <iostream>
using namespace std;

int _tmain(int argc, _TCHAR* argv[])
{
	int iv;
	int iv2 = 1024;
	int iv3 = 999;
	int &reiv;
	int &reiv2 = iv;
	int &reiv3 = iv;
	int *pi;
	*pi = 5;
	pi = &iv3;
	const double di;
	const double maxWage = 10.0
 
;
	const double minWage = 0.5;
	const double *pc = &maxWage;

	cout << pi;
	return 0;
}

2.關鍵點分析

#include "stdafx.h"
#include <iostream>
using namespace std;

int _tmain(int argc, _TCHAR* argv[])
{
	int iv;
	int iv2 = 1024;
	int iv3 = 999;
	int &reiv; //錯誤1：聲明瞭一個引用，沒有初始化
	int &reiv2 =
 
 iv;
	int &reiv3 = iv;
	int *pi;
	*pi = 5; //錯誤2：未給指標宣告指向的地址，直接賦值，造成混亂，值不知道賦到哪裡
	pi = &iv3;
	const double di; //錯誤3：聲明瞭一個const常量，未初始化
	const double maxWage = 10.0;
	const double minWage = 0.5;
	const double *pc = &maxWage;

	cout << pi;
	return 0;
}