C++ Primer 讀書筆記 – 第八章

 第8章 標準IO庫⒈ IO標準庫類型類名           派生自            標頭檔       描述istream        ios               iostream   輸入資料流ostream        ios               iostream   輸出資料流iostream       istream和ostream  iostream   輸入/輸出流ifstream       istream           fstream    

水調歌頭-C語言真難

 -齊言[學生]C語言真難,把題看蒼天,不知出題高人,是否已成仙,我欲多想幾天,又恐系統關閉,難處不勝汗,廢寢忘食做,還是沒編完,指標怪,數組難,函數偏;提交一看,滿面皆錯全玩完,題有陰陽南北,出的什麼東西,此題真叫難,但願人全瘋,千裡共癲癇。 -王樹武[北理工電腦學院院長]誰說編程難,在己不在天,不知機器世界,實現靠語言?欲入網路世界,又恐思緒阻路,總在外面轉CODE有樂趣,就在攻難關!轉滑鼠,盯螢幕,敲鍵盤,不應有怨,程式調通盡歡顏。題有千奇百怪,總有一定之規,事前要想全。但願能堅持,多練必

C語言深度解剖【習題續】

 第二章2.7留一個問題:for(i=0,printf(“First=%d”,i);i<10,printf(“Second=%d”,i);i++,printf(“Third=%d”,i)){printf(“Fourth=%d”,i);}列印出什麼結果?2.7.1我們先看看這個:a+++b 和下面哪個運算式想當:A),a++ +b;B),a+ ++b;第三章3.1.4留四個問題:A),#define SQR (x) ((x)*(x)) #define SUM (x)

C++ Primer 讀書筆記 – 第六章

 第6章 語句㈠ 簡單語句⒈ 運算式語句(expression_r statement)一個運算式加上結尾的分號,執行時導致該運算式被求值⒉ 空語句(null statement)只由一個單獨的分號組成,當文法上需要一個語句但邏輯上並不需要時使用⒊ 聲明語句用於聲明或定義對象或類㈡ 複合陳述式⒈ 複合陳述式(compound statement)又被稱為塊(block),是用一對花括弧{}括起的(可能為空白的)語句序列⒉ 通常用於文法規則要求使用單個語句但程式邏輯需要多個語句時⒊

C++ 學習筆記7

 Use a map to create a table of foods and calories per portion. For example carrots-45, ice cream-250, and so on. Place at least 10 foods in your map. Use a random number generator to pick 4 foods per meal. Print out the meal and its calorie

C++ 學習筆記8

 Write a comparison object that uses the square of an objects value for comparison. Therefore, a large negative number is greater than a small positive number using this comparison object. Generate in a vector the integers -100 to +100 and use an

跟我一起玩Win32開發(10):繪圖(C)

今天我們來欣賞一下用於填充圖形的函數,當然我不會逐個去介紹,因為我們參考MSDN直接套參數就可以了。SetDCBrushColor函數有必要扯一下,它的聲明如下: COLORREF SetDCBrushColor( __in HDC hdc, __in COLORREF crColor

C++ 學習筆記9

 Read a text file and write it to a target text file, changing all lowercase to uppercase and double-spacing the output text. 讀取一個文字檔並將其寫入目標檔案,目標檔案中將所有的小寫字母轉換成大寫字母,並以雙倍行距輸出文本。 name.txtfanzhaoxinBUSH WillSadamuMicro

C. The World is a Theatre

time limit per test2 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard outputThere are n boys and m girls attending a theatre club. To set a play "The Big Bang Theory", they need to choose a group containing exactly t actors

C++ 學習筆記6

 Create a parametric string type. The basic type is to act as container class that contains a class T object. In the prototype case, the object is a char. The normal end-of-string sentinel is 0. The standard behavior should model the functions found

1995 Hello C++

描述 看賞心悅目的代碼對人來說也是一種享受,怎麼讓自己的代碼看起來更整齊友好具備可讀性呢?對於正在學習進階程式語言基礎的我們,從一開始就建立起好的編程習慣就好像學了一手好字,無論是卷面分還是工作的效率都會大大提高的~~要求:列印如下的c++常式#include <iostream> using namespace std; int main(){   cout << "Hello,C++!\n";       return 0;    }輸入 無輸入輸出 1

C++ 學習筆記5

 Add some functions to the simple graphics system: perimeter(), area() and volume() to calculate its perimeter, area and volume (only for ThreeDimentionalShape) respectively; a function draw() to draw a shape with different colors, thickness and

C檔案操作函數

clearerr(清除檔案流的錯誤旗標) 相關函數 feof表標頭檔 #include<stdio.h> 定義函數 void clearerr(FILE * stream); 函數說明 clearerr()清除參數stream指定的檔案流所使用的錯誤旗標。 傳回值 fclose(關閉檔案) 相關函數 close,fflush,fopen,setbuf 表標頭檔 #include<stdio.h> 定義函數 int fclose(FILE * stream); 函數說明

C++ 學習筆記4

 Define a base class Person that contains universal information, including name, address, birth day, and gender. Derived from this class the following classes: class student: virtual public person { //……relevant additional state and

C++ 學習筆記3

 The following class is the my_string class that has reference semantics for copying. This class has shallow copy semantics because pointer assignment replaces copying. The techniques illustrated are common for this type of aggregate. We use the

C. Beautiful Sets of Points

time limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputManao has invented a new mathematical term — a beautiful set of points. He calls a set of points on a plane beautiful if it meets the following

C++ 學習筆記2

 Implement and test an Intset class. Each object of this class will represent a set of integers, storing the different elements as integers. Provide constructors and some operations, such as Empty(), IsEmpty(),, IsMemberOf(int), IsEqual(IntSet&),

C++ 學習筆記1

 Implement and test a class deque, which is a double-ended queue that allows pushing and popping at both ends.class queue{public:void reset() { top = bottom = max_len/2; top--; }...private:char s[max_len];int bottom,top;};Declare and implement

爭論VB.NET與C#哪個好?——智商低下的舉動

在網上,或者在論壇上總會看到這樣的現象,到底是VB.net有前途,還是C#好?此起彼伏。冷靜下來想一想,這樣的爭論是不是必要的?有什麼積極意義?沒有,這樣爭論顯示是智商低下的人才去乾的。 對於.NET,也不用我再介紹了,不瞭解的話,就“百度”兩下,或者“Google”一下吧,一定有超級詳細的介紹! .NET是微軟公司開發的,微軟公司也說了,使用任何語言編寫的代碼,最終也被編譯成中繼語言,也就是說,不管你用啥語言來寫代碼,最後的結果是一樣的(當然,非託管C++功能比較強大)。換句話怎麼說呢,那就是

C陷阱與缺陷 讀書筆記

本書封皮如下:摘抄如下:P61 &兩側的運算元必須被求值,這一點和&&不同p73 float類型的參數會自動轉換為double類型,short或char類型的參數會自動轉換為int類型p111 q=a/b r=a%b C語言中只能保證q*b+r=a,這是定義餘數的關係p115 如果ptr指向的是一塊最近一次調用malloc,realloc或calloc分配的記憶體,即使這塊記憶體已被釋放,realloc函數仍然可以工作。例如下面代碼合法free(p);p=realloc(

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