C++面向对象程序设计考试题库.doc

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1、SHORT ANSWER1. A set of instructions that the computer will follow is called a _.Answer: program2. The collection of programs used by the computer is known as _.Answer: software3. Computers that are interconnected are known as a _.Answer: network4. A digit that can hold a zero or a one is known as a

2、 _.Answer: bit5. List at least two input devices _ _.Answer: keyboard, mouse, network card, file6. List at least two output devices _ _.Answer: screen, printer, file, network card7. A variable that can hold a whole number is called a(n) _.Answer: integer8. What punctuation signifies the end of a C+

3、statement? _Answer: A semicolon.9. A mistake in a computer program is called a _.Answer: bug10. A _ is the program that translates a program written in C+ into machine language.Answer: compiler11. Errors in a program can be classified into three types, list themAnswer: Syntax, logic,run-time12. What

4、 does the following statement in C+ print to the screen?cout “Hello studentsn”;Answer: Hello students.13. A mistake that is a direct violation of the syntax rules will generate a compiler _.Answer: error14. If your program compiles and runs, but gives an incorrect output, this is known as a _ error.

5、Answer: logic15. The part of the computer that controls and executes programs is called the _.Answer: CPUMULTIPLE CHOICE1. Who was the programmer for Charles Babbages analytical engine?a. Grace Hopperb. Ada Lovelacec. Lord Bryand. Walter Savitch Answer: B2. An algorithm isa. The inputs and outputs o

6、f a programb. The part of the computer that does the processingc. A finite set of steps to solve a problemd. A complete computer program Answer: C3. A memory address isa. Where a variable is storedb. Where the computer is locatedc. A step in the program.d. Where the CPU is stored. Answer: A4. A comp

7、uter that is normally used by only one person at a time is called a a. Serverb. Mainframec. Personal Computerd. Network Answer: C5. The physical machines that make up a computer is called the a. Softwareb. Networkc. Devicesd. CPUe. Hardware Answer: E6. Which of the following is not a phase of the pr

8、ogram-design process?a. Problem-solvingb. Implementationc. Marketing the final program Answer: C7. Which of the following is not part of the Software Life Cycle?a. Analysisb. Designc. Data Entryd. Implementatione. Testing Answer: C8. From which language did C+ directly evolve?a. Ab. Adac. Cd. C+e. C

9、- Answer: C9. What does the following line of code display to the screen?cout “This is the computern programming bookn”;a. This is the computern programming bookb. This is the computerc. Nothingd. This is the computer programming book Answer: D10. C+ statements end with aa. Periodb. Commac. Semicolo

10、nd. Nothing Answer: C11. Which of the following is not an example of a program bug?a. Run-time errorb. Operator errorc. Syntax errord. Logic error Answer:B12. What does the following code print to the screen?cout “hello”;a. Hellob. helloc. HELLOd. Nothing Answer: B13. The set of instructions that a

11、computer will follow is known as:a. Hardwareb. Algorithmc. Programd. CPU Answer: C14. The anagram CPU stands fora. Computer Programming Unitb. Central Processing Unitc. Central Program Userd. Computer Paper User Answer: B15. The output of the compiler is calleda. The programb. Source codec. Linked c

12、oded. Object code Answer:D16. The term OS stands fora. Operating Systemb. Oscillating Systemc. Operations Services d. Nothing Answer: A17. Who designed the first programmable computer?a. IBMb. Microsoftc. Inteld. Babbagee. Dell Answer: D18. A finite sequence of precise instructions that leads to a p

13、roblem solution isa. A programb. The CPUc. A List of Inputs and Outputsd. An Algorithm Answer: D19. Who developed C+?a. Bjarne Stroustrupb. Ken Thompsonc. Charles Babbaged. Ada Lovelace Answer: A20. One of the biggest difference between C and C+ is:a. C is object-orientedb. C+ is object-orientedc. A

14、ll C+ programs are also C programsd. C only runs on UNIX computers Answer: B21. int number; a. is an output statementb. is an input statementc. is a variable declarationd. is a program Answer: C22. cout number;A is an output statementB is an input statementC is a variable declarationD is a program A

15、nswer: B23. What does the following print to the screen?cout “Hello Students/n”;a. Hello Studentsb. hello Studentsc. HELLO STUDENTSd. Hello Students/n Answer:D24. #include a. is a variable declarationb. an executable statementc. an include directived. illegal code Answer: C25. A byte consists of how

16、 many bits?a. 6 b. 7c. 8d. 9e. 10 Answer: C26. What is wrong with the following statement?cout “Hello to everyonen”a. cout should be countb. missing a semicolonc. missing a “d. missing a ( Answer: B27. What is wrong with the following statementPage: 528 and 27 are the samePage: 527 and 28 are differ

17、ent, 27 is missing a semicolon, while 28 is missing the closing double quote.?cout “Hello, my name is Billn”;Answer: FALSE3. You should write your program before you write the algorithm.Answer: FALSE4. It is considered better style to put the braces () on separate lines.Answer: TRUE5. The compiler w

18、ill catch all your programming mistakes.Answer: FALSE6. C+ is a low-level language.Answer: FALSE7. Main memory holds its data if the computer is turned offAnswer: FALSE8. An algorithm is always written in C+ Answer: FALSE9. There are 8 bytes in one bit.Answer: FALSE10. The printer is an example of a

19、n input device.Answer: FALSETRUE/FALSE1. In the following code fragment, x has the value of 3.int x = 3;ANSWER: TRUE2. The body of a do-while loop always executes at least once.ANSWER: TRUE3. The body of a while loop may never execute.ANSWER: TRUE4. The opposite of (x 3 & x 10) is (x 10)ANSWER: FALS

20、E5. The integer 0 is considered true.ANSWER: FALSE6. Loops are used when we need our program to make a choice between two or more things.ANSWER: FALSE7. It is legal to declare more than one variable in a single statement.ANSWER: TRUE8. Variable names may begin with a number.ANSWER: FALSE9. The oppos

21、ite of less than is greater thanANSWER: FALSE10. Every line in a program should have a comment.ANSWER: FALSEShort Answer1. is called the _ operator.ANSWER: insertion2. The braces for a loop define the _ of the loop.ANSWER: body3. A loop that always executes the loop body at least once is known as a

22、_ loop.ANSWER: do-while4. int myValue; is called a _.ANSWER: variable declaration5. What is the opposite of ( x 12)? _ANSWER: (x =20 | x 19 & x is known as the _ operator.ANSWER: extraction10. Is used for input or output? _ANSWER: output11. The stream that is used for input from the keyboard is call

23、ed _.ANSWER: cin12. The stream that is used for output to the screen is called _.ANSWER: cout13. Write the loop condition to continue a while loop as long as x is negative. _ANSWER: while(x 0)14. When must we use braces to define the body of a contitional expression? _ANSWER: When there are multiple

24、 statements in the body.15. In a compound logical and (&) expression, the evaluation of the expression stops once Page: 7true only for &, not for | where it looks for true not falseone of the terms of the expression is false. This is known as _ evaluation.ANSWER: short-circuit evaluationPage: 7I add

25、ed the (&) to the questionMultiple Choice1. Which of the following is a valid identifier?a. 3comb. three_comc. 3_comd. 3-come. dollar$ ANSWER: C2. Which of the following is not a valid identifer?a. returnb. myIntc. myIntegerd. total3 ANSWER: A3. What is the value of x after the following statements?

26、int x, y, z;y = 10;z = 3;x = y * z + 3;a. Garbageb. 60c. 30d. 33 ANSWER: D4. What is the value of x after the following statements?int x;x = 0;x = x + 30;a. 0b. 30c. 33d. Garbage ANSWER: B5. What is the value of x after the following statements?int x;x = x + 30;a. 0b. 30c. 33d. Garbage ANSWER: D6. W

27、hat is the output of the following code?float value;value = 33.5;cout value endl;a. 33.5b. 33c. valued. Garbage ANSWER: A7. What is the output of the following code?float value;value = 33.5;cout value endl;a. 33.5b. 33c. valued. Garbage ANSWER: C8. What is the output of the following code?cout This

28、is a myFloat;b. cin myFloat;d. cin myFloat endl; ANSWER: A10. Another way to write the value isa. 3.e09b. 3.e-09c. 3.x09d. e09 ANSWER: A11. Which of the following statements is NOT legal?a. char ch=b;b. char ch=0;c. char ch=65;d. char ch=cc; ANSWER: D12. What is the value of x after the following st

29、atements?float x;x = 15/4;a. 3.75b. 4.0c. 3.0d. 60 ANSWER: C13. What is the value of x after the following statements?int x;x = 15/4;a. 15b. 3c. 4d. 3.75 ANSWER: B14. What is the value of x after the following statements?int x;x = 15 %4;a. 15b. 4c. 3d. 3.75 ANSWER: C15. What is the value of x after

30、the following statement?float x;x = 3.0 / 4.0 + 3 + 2 / 5 a. 5.75 b. 5.75c. 1.75d. 3.75 ANSWER: D16. What is the value of x after the following statement?float x;x = 3.0 / 4.0 + (3 + 2 )/ 5 a. 5.75 b. 5.75c. 1.75d. 3.75 ANSWER: C17. What is the value of x after the following statements?double x;x =

31、0;x += 3.0 * 4.0;x -= 2.0;a. 22.0b. 12.0c. 10.0d. 14.0 ANSWER: C18. Given the following code fragment and the input value of 4.0, what output is generated?float tax;float total;cout total;if ( total = 3.0)tax = 0.10;cout total + (total * tax) endl;elsecout total endl;a. 3b. 3.3c. 4.0d. 4.4 ANSWER: D

32、19. Given the following code fragment and the input value of 2.0, what output is generated?float tax;float total;cout total;if ( total = 3.0)tax = 0.10;cout total + (total * tax) endl;elsecout total endl;a. 2.2b. 2.0c. 3.1d. 4.4 ANSWER: B20. If x has the value of 3, y has the value of -2, and w is 1

33、0, is the following condition true or false?if( x 2 & w y)a. trueb. False ANSWER: B21. What is the correct way to write the condition y x z?a. (y x z)b. ( (y x) | (y z)d. (y x) & (x z) ANSWER: D22. Given the following code fragment, and an input value of 3, what is the output that is generated?int x

34、;cout x;if(x=0)cout x is zeron;elsecout x is not zeron;a. x is zerob. x is not zeroc. unable to determined. x is 3 ANSWER: A(note it is an assignmentPage: 11But the answer is the same as if you used = instead of =. Maybe an input of 0?Page: 11I had witten the wrong answer! It will always print out x is zero!)23. Given the following code fragment, and an input value of 5, what is the output?int x;if( x 3)cout smalln;elseif( x 4)cout mediumn;elseif( x 6)cout largen;elsecout giantn;a. small