關于編程的優美句子

解夢佬 0

1. 有哪些和編程有關的經典語句

1. 2. One man's constant is another man's variable.3. Functions delay binding: data structures induce binding. Moral: Structure data late in the programming process.4. Syntactic sugar causes cancer of the semi-colons.5. Every program is a part of some other program and rarely fits.6. If a program manipulates a large amount of data, it does so in a small number of ways.7. Symmetry is a complexity reducing concept (co-routines include sub-routines); seek it everywhere.8. It is easier to write an incorrect program than understand a correct one.9. A programming language is low level when its programs require attention to the irrelevant.10. It is better to have 100 functions operate on one data structure than 10 functions on 10 data structures.11. Get into a rut early: Do the same processes the same way. Accumulate idioms. Standardize. The only difference (!) between Shakespeare and you was the size of his idiom list - not the size of his vocabulary.12. If you have a procedure with 10 parameters, you probably missed some.13. Recursion is the root of computation since it trades description for time.14. If two people write exactly the same program, each should be put in micro-code and then they certainly won't be the same.15. In the long run every program becomes rococo - then rubble.16. Everything should be built top-down, except the first time.17. Every program has (at least) two purposes: the one for which it was written and another for which it wasn't.18. If a listener nods his head when you're explaining your program, wake him up.19. A program without a loop and a structured variable isn't worth writing.20. A language that doesn't affect the way you think about programming, is not worth knowing.21. Wherever there is modularity there is the potential for misunderstanding: Hiding information implies a need to check communication.22. Optimization hinders evolution.23. A good system can't have a weak command language.24. To understand a program you must become both the machine and the program.25. Perhaps if we wrote programs from childhood on, as adults we'd be able to read them.26. One can only display complex information in the mind. Like seeing, movement or flow or alteration of view is more important than the static picture, no matter how lovely.27. There will always be things we wish to say in our programs that in all known languages can only be said poorly.28. Once you understand how to write a program get someone else to write it.29. Around computers it is difficult to find the correct unit of time to measure progress. Some cathedrals took a century to complete. Can you imagine the grandeur and scope of a program that would take as long?30. For systems, the analogue of a face-lift is to add to the control graph an edge that creates a cycle, not just an additional node.31. In programming, everything we do is a special case of something more general - and often we know it too quickly.32. Simplicity does not precede complexity, but follows it.33. Programmers are not to be measured by their ingenuity and their logic but by the completeness of their case analysis.34. The 11th commandment was "Thou Shalt Compute" or "Thou Shalt Not Compute" - I forget which.35. The string is a stark data structure and everywhere it is passed there is much duplication of process. It is a perfect vehicle for hiding information.36. Everyone can be taught to sculpt: Michelangelo would have had to be taught how not to. So it is with the great programmers.37. The use of a program to prove the 4-color theorem will not change mathematics - it merely demonstrates that the theorem, a challenge for a century, is probably not important to mathematics.38. The most important computer is the one that rages in our skulls and ever seeks that satisfactory external emulator. The standardization of real computers would be a disaster - and so it probably won't happen.39. Structured Programming supports the law of the excluded muddle.40. Re graphics: A picture is worth 10K words - but only those to describe the picture. Hardly any sets of 10K words can be adequately described with pictures.41. There are two ways to write error-free programs; only the third one works.42. Some programming languages manage to absorb change, but withstand progress.43. You can measure a programmer's perspective by noting his attitude on the continuing vitality of FORTRAN.44. In software systems it is often the early bird that makes the worm.45. Sometimes I think the only universal in the computing field is the fetch-execute-cycle.46. The goal of computation is the emulation of our synthetic abilities, not the 。

2. 有哪些和編程有關的經典語句

One man's constant is another man's variable.Functions delay binding: data structures induce binding. Moral: Structure data late in the programming process.Syntactic sugar causes cancer of the semi-colons.Every program is a part of some other program and rarely fits.If a program manipulates a large amount of data, it does so in a small number of ways.Symmetry is a complexity reducing concept (co-routines include sub-routines); seek it everywhere.It is easier to write an incorrect program than understand a correct one.A programming language is low level when its programs require attention to the irrelevant.It is better to have 100 functions operate on one data structure than 10 functions on 10 data structures.Get into a rut early: Do the same processes the same way. Accumulate idioms. Standardize. The only difference (!) between Shakespeare and you was the size of his idiom list - not the size of his vocabulary.If you have a procedure with 10 parameters, you probably missed some.Recursion is the root of computation since it trades description for time.If two people write exactly the same program, each should be put in micro-code and then they certainly won't be the same.In the long run every program becomes rococo - then rubble.Everything should be built top-down, except the first time.Every program has (at least) two purposes: the one for which it was written and another for which it wasn't.If a listener nods his head when you're explaining your program, wake him up.A program without a loop and a structured variable isn't worth writing.A language that doesn't affect the way you think about programming, is not worth knowing.Wherever there is modularity there is the potential for misunderstanding: Hiding information implies a need to check communication.Optimization hinders evolution.A good system can't have a weak command language.To understand a program you must become both the machine and the program.Perhaps if we wrote programs from childhood on, as adults we'd be able to read them.One can only display complex information in the mind. Like seeing, movement or flow or alteration of view is more important than the static picture, no matter how lovely.There will always be things we wish to say in our programs that in all known languages can only be said poorly.Once you understand how to write a program get someone else to write it.Around computers it is difficult to find the correct unit of time to measure progress. Some cathedrals took a century to complete. Can you imagine the grandeur and scope of a program that would take as long?For systems, the analogue of a face-lift is to add to the control graph an edge that creates a cycle, not just an additional node.In programming, everything we do is a special case of something more general - and often we know it too quickly.Simplicity does not precede complexity, but follows it.Programmers are not to be measured by their ingenuity and their logic but by the completeness of their case analysis.The 11th commandment was "Thou Shalt Compute" or "Thou Shalt Not Compute" - I forget which.The string is a stark data structure and everywhere it is passed there is much duplication of process. It is a perfect vehicle for hiding information.Everyone can be taught to sculpt: Michelangelo would have had to be taught how not to. So it is with the great programmers.The use of a program to prove the 4-color theorem will not change mathematics - it merely demonstrates that the theorem, a challenge for a century, is probably not important to mathematics.The most important computer is the one that rages in our skulls and ever seeks that satisfactory external emulator. The standardization of real computers would be a disaster - and so it probably won't happen.Structured Programming supports the law of the excluded muddle.Re graphics: A picture is worth 10K words - but only those to describe the picture. Hardly any sets of 10K words can be adequately described with pictures.There are two ways to write error-free programs; only the third one works.Some programming languages manage to absorb change, but withstand progress.You can measure a programmer's perspective by noting his attitude on the continuing vitality of FORTRAN.In software systems it is often the early bird that makes the worm.Sometimes I think the only universal in the computing field is the fetch-execute-cycle.The goal of computation is the emulation of our synthetic abilities, not the understanding of our analytic ones.Like punning, programming is a play on words.As Will Rogers would have said, "There is no such thing as a free variable."。

3. C語言三種循環結構的完整句子

您好!C語言循環控制語句提供了 while語句、do-while語句和for語句來實現循環結構。

while循環語句,一般形式如下:

while(表達式)

語句

do-while語句,一般形式如下:

do

語句

while(表達式);

do-while循環是先執行語句,然后對表達式求值。若值為真,則再次執行語句,如此反復執行,否則將結束循環。語句可以是簡單語句,也可以是復合語句。

for語句,for語句是循環控制結構中使用最廣泛的一種循環控制語句,特別適合已知循環次數的情況。

一般形式如下:

for ( [表達式 1]; [表達式 2 ]; [表達式3] )

語句

其中:

表達式1:一般為賦值表達式,給控制變量賦初值;

表達式2:關系表達式或邏輯表達式,循環控制條件;

表達式3:一般為賦值表達式,給控制變量增量或減量;

語句:循環體,當有多條語句時,必須使用復合語句。

其執行過程如下:首先計算表達式1,然后計算表達式 2。若表達式2為真,則執行循環體;否則,退出 for循環,執行for循環后的語句。如果執行了循環體,則循環體每執行一次,都計算表達式3,然后重新計算表達式2,依此循環,直至表達式 2的值為假,退出循環。

for語句的三個表達式都是可以省略的,但分號“;”絕對不能省略。for語句有以下幾種格式:

(1)for(; ;) 語句;

(2)for(;表達式2;表達式3 ) 語句;

(3)for(表達式1;表達式2;) 語句;

(4)for(i=1,j = n; i < j; i ++,j - - ) 語句;

希望可以幫到您,望采納,祝您開心!

4. C語言中的語句都有什麼啊

在C語言中,程序都是由語句組成的,語句用來命令計算機系統執行某種操作。

一個好的程序設計語言中提供的語句,應該能夠使得編寫出來的程序,結構清晰合理,風格優美和執行效率高。C語句可歸為 以下5大類: 1.復合語句 用大括號括起來的一些語句。

這些語句被看成一個整體。如{t=x;x=y;y=t}中,共有3條語句,每個語句都以分號結尾。

2.控制語句 控制語句用于控制程序的流程,以實現程序的各種結構方式。它們由特定的語句定義符組成。

C語言有9種控制語句,可分成以下3類。 (1)條件判斷語句:if 語句,switch 語句。

(2)循環執行語句:do while 語句,while 語句,for 語句。 (3)轉向語句:break 語句,goto 語句,continue 語句,return 語句。

3.函數調用語句 一個函數調用加一個分號構成函數調用語句。例如: printf("Where do you want to go?"); 上述語句是由一個printf格式輸出函數加一個分號構成一條函數調用語句。

4.表達式語句 用表達式構成語句,表示一個運算或操作。C語言中最簡單的語句是表達式語句,它的一般形式:; 其實表達式語句就是在表達式最后加上一個“;”。

一個表達式語句必須在最后出現分號,分號是表達式語句中不可或缺的。例如:4+5; a==b&&c==d; 5.空語句 只有分號“;”組成的語句稱為空語句。

空語句不執行任何操作,在程序中可用來做空循環體。例如: while(getchar()!='\n'); 該語句的功能是,只要從鍵盤輸入的字符不是回車則重新輸入。

這里的循環體是空語句。 以上便是對C語句的基本概述,描述的可能不是很詳細,具體的使用方法和技巧還要靠自己的實踐來獲得,在此不再贅述。

5. pasical程序基本語句

完全的Pascal程序框架 program程序名(程序參數表); label(可省略) 標號說明; const 常量說明; type 類型說明; var 變量說明; function 函數說明; end; procedure begin 過程說明; end; begin 程序語句; ……; 程序語句; end. 基本符號 Pascal語言只能使用以下幾類基本符號:(1)大小寫英文字母 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z a b c d e f g h i j k l m n o p q r s t u v w x y z (2)數字 1 2 3 4 5 6 7 8 9 0 (3)其他符號 + - * / = <> <= >= > < ( ) [ ] { } := , . ; : .. div mod 運算符 優先級 not 1(最優先) *,/,div,mod,and 2 xor,+,-,or 3 in,=,<>,>=,<=,<,> 4(末優先) 注意,Pascal語言除了可以使用以上規定的字符外,不得使用其他任何符號。

第一課 Pascal語言知識 一、Pascal 語言概述 Pascal語言是一種算法語言,它是瑞士蘇黎世聯邦工業大學的沃思教授于1968年設計完成的,1971年正式發表。Pascal語言是在ALGOL60的基礎上發展而成的。

它是一種結構化的程序設計語言。它的功能強、編譯程序簡單,是70年代影響最大一種算法語言。

從使用者的角度來看,Pascal語言有以下幾個主要的特點: ⒈ 結構化 Pascal可以方便地書寫出結構化程序。這就保證程序的正確性和易讀性。

在結構化這一點上,比其它算法語言更好一些。 ⒉ 數據類型豐富 Pascal提供了整數型、實數型、字符型、布爾型、枚舉型、子界型以及由以上類型構成的數組類型、集合類型、記錄類型和文件類型。

此外,還提供了其它許多語言中所沒有的指針類型。豐富的數據結構和上述的結構化性質,使得Pascal可以被方便地用來描述復雜的算法。

⒊ 適用性好 既適用于數值運算,也適用于非數值運算領域。有些語言只適用于數值計算,有些語言則適用于商業數據處理和管理領域。

Pascal的功能較強,能廣泛應用于各種領域。 ⒋ 書寫較自由 不象有些算法語言那樣對程序的書寫格式有嚴格的規定。

Pascal允許一行寫多個語句,一個語句可以分寫在多行上,這樣就可以使Pascal程序寫得象詩歌格式一樣優美,便于閱讀,但一行不可超過257個字符。 由于以上特點,許多學校選Pascal作為程序設計課程中的一種主要的語言。

它能給學生嚴格而良好的程序設計的基本訓練。培養學生結構化程序設計的風格。

二、Pascal語言程序的基本結構 任何程序設計語言都有一定的規則。使用Pascal語言必須遵循其本身所規定的規則來編寫程序。

盡管不同版本的Pascal語言所采用的符號的數量、形式不盡相同,但其基本成分一般都符合標準Pascal的規定。下面我們首先來了解Pascal語言的程序基本結構。

為了明顯起見,先舉一個最簡單的Pascal程序例子: 【例1】 program li1(input,output); {程序首部} const pi=3.1415926; var r,l,s:real; begin write('input r:'); readln(r); s:=pi*r*r; l:=2*pi*r; writeln('s=',s); writeln('l=',l); end. 從這個簡單的程序可以看到: ⒈ 一個Pascal程序分為兩個部分:程序首部和程序體(或稱分程序)。 ⒉ 程序首部是程序的開頭部分,它包括: ⑴程序標志。

用"program"來標明這是一個Pascal 程序。Pascal規定任何一個Pascal程序的首部都必須以此字開頭。

在Free Pascal中,首部也可省略。 ⑵程序名稱。

由程序設計者自己定義,如例中的li1。在寫完程序首部之后,應有一個分號。

⒊ 程序體是程序的主體,在有的書本里也稱"分程序"。程序體包括說明部分(也可省略)和執行部分兩個部分。

⑴說明部分用來描述程序中用到的變量、常量、類型、過程與函數等。本程序中第二行是"變量說明",用來定義變量的名稱、類型。

Pascal規定,凡程序中用到的所有變量、符號常量、數組、過程與函數、記錄、文件等數據都必須"先說明,再使用"。 ⑵執行部分的作用是給出需要計算機執行的操作。

執行部分以"begin"開始,以"end"結束,其間有若干個語句,語句之間以分號隔開。執行部分之后有一個句點,表示整個程序結束。

⒋ Pascal程序的書寫方法比較靈活。書寫程序應結構清晰、容易閱讀理解。

在編寫程序時希望讀者盡量模仿本書中例題程序格式。 ⒌ 在程序中,一對大括號間的文字稱為注釋(也可用/*、*/)。

注釋的內容由人們根據需要書寫,可以用英語或漢語表示。注釋可以放在任何空格可以出現的位置。

執行程序時計算機對注釋不予理睬。三、Free Pascal語言系統的使用 目前,信息學競賽使用的Pascal語言系統是Free Pascal,下面我們就來學習Free Pascal的使用。

1.系統的啟動free pascal 在運行系統目錄下的啟動程序fp.EXE,即可啟動系統。屏幕上出現如圖1所示的集成環境。

2.Free Pascal系統集成環境簡介 最頂上一行為主菜單。中間藍色框內為編輯窗口,在它個編輯窗口內可以進行程序的編輯。

最底下一行為提示行,顯示出系統中常用命令的快捷鍵,如打開一個文件的快捷鍵為F3,將當前編輯窗口中文件存盤的快捷鍵為F2,獲得系統幫助的快捷鍵為F1,等等。 3.新建程序窗口 按F10進行主菜單,選擇FILE菜單,執行其中New命令。

就可建立一個新的程序窗口(默認文件名為Noname。

6. 經典C語言編程30例(一)

【程序1】題目:有1、2、3、4個數字,能組成多少個互不相同且無重復數字的三位數?都是多少?1.程序分析:可填在百位、十位、個位的數字都是1、2、3、4。

組成所有的排列后再去 掉不滿足條件的排列。 2.程序源代碼:main(){int i,j,k;printf("\n");for(i=1;i<5;i++) /*以下為三重循環*/ for(j=1;j<5;j++) for (k=1;k<5;k++) { if (i!=k&&i!=j&&j!=k) /*確保i、j、k三位互不相同*/ printf("%d,%d,%d\n",i,j,k); }}==============================================================【程序2】題目:企業發放的獎金根據利潤提成。

利潤(I)低于或等于10萬元時,獎金可提10%;利潤高 于10萬元,低于20萬元時,低于10萬元的部分按10%提成,高于10萬元的部分,可可提 成7.5%;20萬到40萬之間時,高于20萬元的部分,可提成5%;40萬到60萬之間時高于 40萬元的部分,可提成3%;60萬到100萬之間時,高于60萬元的部分,可提成1.5%,高于 100萬元時,超過100萬元的部分按1%提成,從鍵盤輸入當月利潤I,求應發放獎金總數?1.程序分析:請利用數軸來分界,定位。注意定義時需把獎金定義成長整型。

2.程序源代碼:main(){long int i;int bonus1,bonus2,bonus4,bonus6,bonus10,bonus;scanf("%ld",&i);bonus1=100000*0.1;bonus2=bonus1+100000*0.75;bonus4=bonus2+200000*0.5;bonus6=bonus4+200000*0.3;bonus10=bonus6+400000*0.15; if(i<=100000) bonus=i*0.1; else if(i<=200000) bonus=bonus1+(i-100000)*0.075; else if(i<=400000) bonus=bonus2+(i-200000)*0.05; else if(i<=600000) bonus=bonus4+(i-400000)*0.03; else if(i<=1000000) bonus=bonus6+(i-600000)*0.015; else bonus=bonus10+(i-1000000)*0.01;printf("bonus=%d",bonus);} ==============================================================【程序3】題目:一個整數,它加上100后是一個完全平方數,再加上168又是一個完全平方數,請問該數是多少?1.程序分析:在10萬以內判斷,先將該數加上100后再開方,再將該數加上268后再開方,如果開方后 的結果滿足如下條件,即是結果。請看具體分析:2.程序源代碼:#include "math.h"main(){long int i,x,y,z;for (i=1;i<100000;i++) { x=sqrt(i+100); /*x為加上100后開方后的結果*/ y=sqrt(i+268); /*y為再加上168后開方后的結果*/ if(x*x==i+100&&y*y==i+268)/*如果一個數的平方根的平方等于該數,這說明此數是完全平方數*/ printf("\n%ld\n",i); }}==============================================================【程序4】題目:輸入某年某月某日,判斷這一天是這一年的第幾天?1.程序分析:以3月5日為例,應該先把前兩個月的加起來,然后再加上5天即本年的第幾天,特殊 情況,閏年且輸入月份大于3時需考慮多加一天。

2.程序源代碼:main(){int day,month,year,sum,leap;printf("\nplease input year,month,day\n");scanf("%d,%d,%d",&year,&month,&day);switch(month)/*先計算某月以前月份的總天數*/{ case 1:sum=0;break; case 2:sum=31;break; case 3:sum=59;break; case 4:sum=90;break; case 5:sum=120;break; case 6:sum=151;break; case 7:sum=181;break; case 8:sum=212;break; case 9:sum=243;break; case 10:sum=273;break; case 11:sum=304;break; case 12:sum=334;break; default:printf("data error");break;}sum=sum+day; /*再加上某天的天數*/ if([email protected]==0||(year%4==0&&year0!=0))/*判斷是不是閏年*/ leap=1; else leap=0;if(leap==1&&month>2)/*如果是閏年且月份大于2,總天數應該加一天*/sum++;printf("It is the %dth day.",sum);}==============================================================【程序5】題目:輸入三個整數x,y,z,請把這三個數由小到大輸出。1.程序分析:我們想辦法把最小的數放到x上,先將x與y進行比較,如果x>y則將x與y的值進行交換, 然后再用x與z進行比較,如果x>z則將x與z的值進行交換,這樣能使x最小。

2.程序源代碼:main(){int x,y,z,t;scanf("%d%d%d",&x,&y,&z);if (x>y){t=x;x=y;y=t;} /*交換x,y的值*/if(x>z){t=z;z=x;x=t;}/*交換x,z的值*/if(y>z){t=y;y=z;z=t;}/*交換z,y的值*/printf("small to big: %d %d %d\n",x,y,z);}==============================================================【程序6】題目:用*號輸出字母C的圖案。1.程序分析:可先用'*'號在紙上寫出字母C,再分行輸出。

2.程序源代碼:#include "stdio.h"main(){printf("Hello C-world!\n");printf(" ****\n");printf(" *\n");printf(" * \n");printf(" ****\n");}==============================================================【程序7】題目:輸出特殊圖案,請在c環境中運行,看一看,Very Beautiful!1.程序分析:字符共有256個。不同字符,圖形不一樣。

2.程序源代碼:#include "stdio.h"main(){char a=176,b=219;printf("%c%c%c%c%c\n",b,a,a,a,b);printf("%c%c%c%c%c\n",a,b,a,b,a);printf("%c%c%c%c%c\n",a,a,b,a,a);printf("%c%c%c%c%c\n",a,b,a,b,a);printf("%c%c%c%c%c\n",b,a,a,a,b);}=====。

7. 這條編程語句是什麼意思

WaitForSingleObjectDWORDWaitForSingleObject(HANDLEhHandle,DWORDdwMilliseconds);VB聲明DeclareFunctionWaitForSingleObjectLib"kernel32"(ByValhHandleAsLong,ByValdwMillisecondsAsLong)AsLong說明參數hHandle是一個事件的句柄,第二個參數dwMilliseconds是時間間隔。

如果事件是有信號狀態返回WAIT_OBJECT_0,如果時間超過dwMilliseconds值但時間事件還是無信號狀態則返回WAIT_TIMEOUT。hHandle可以是下列對象的句柄:ChangenotificationConsoleinputEventJobMemoryresourcenotificationMutexProcessSemaphoreThreadWaitabletimerWaitForSingleObject函數用來檢測hHandle事件的信號狀態,當函數的執行時間超過dwMilliseconds就返回,但如果參數dwMilliseconds為INFINITE時函數將直到相應時間事件變成有信號狀態才返回,否則就一直等待下去,直到WaitForSingleObject有返回值才執行后面的代碼。

此外,當dwMilliseconds設置為特殊值0時,測試hHandle核心對象是否被激發,函數立即返回。返回值:WAIT_ABANDONED0x00000080:當hHandle為mutex時,如果擁有mutex的線程在結束時沒有釋放核心對象會引發此返回值。

WAIT_OBJECT_00x00000000:核心對象已被激活WAIT_TIMEOUT0x00000102:等待超時WAIT_FAILED0xFFFFFFFF:出現錯誤,可通過GetLastError得到錯誤代碼在這里舉個例子:先創建一個全局Event對象g_ 在程序中可以通過調用CEvent::SetEvent設置事件為有信號狀態。 下面是一個線程函數MyThreadPro()UINTCFlushDlg::MyThreadProc(LPVOIDpParam){WaitForSingleObject(g_event,INFINITE);For(;;){…………。

}return0;}在這個線程函數中只有設置g_event為有信號狀態時才執行下面的for循環,因為g_event是全局變量,所以我們可以在別的線程中通過g_event。 SetEvent控制這個線程。

還有一種用法就是我們可以通過WaitForSingleObject函數來間隔的執行一個線程函數的函數體UINTCFlushDlg::MyThreadProc(LPVOIDpParam){while(WaitForSingleObject(g_event,MT_INTERVAL)!=WAIT_OBJECT_0){………………}return0;}在這個線程函數中可以可以通過設置MT_INTERVAL來控制這個線程的函數體多久執行一次,當事件為無信號狀態時函數體隔MT_INTERVAL執行一次,當設置事件為有信號狀態時,線程就執行完畢了。