chapter4_6e.doc

Test Bank for Problem Solving with C+: The Object of Programming, 6/e Chapter 4 Procedural Abstraction and Functions That Return a ValueTRUE FALSE1. A function may return more than one item ANSWER: False2. function naming rules follow variable naming rules ANSWER: TRUE3. Every include directive must be followed by using namespace std; ANSWER: False4. the types of parameters are optional in the function declaration ANSWER: False5. the parameter names are mandatory in the function header ANSWER: False6. it is possible to have a function that has no parameters ANSWER: TRUE7. the parameters listed in the function declaration are considered global variables ANSWER: False8. variables that are declared outside of any function body or parameter list are considered global. ANSWER: TRUE9. pow(2,3) is the same as pow(3,2). ANSWER: False10. Functions may have multiple return statements. ANSWER: TRUEFill In the Blank1. #include is known as an _.ANSWER: include directive2. The absolute value function abs is located in the _ library.ANSWER: cstdlib3. Converting from one type to another is called _.ANSWER: casting4. What is the value of (pow(2,sqrt(9.0)+ceil(0.99)? _ANSWER: 165. Write the code to convert the value in an integer variable named count to a double. _.ANSWER: static_cast(count)6. In the following function declaration, the variable size is known as a _.int myFunction ( int size);ANSWER: (formal) parameter7. The _ describes how the function will work.ANSWER: function body8. When you want to use a function in your program, you would make a function _.ANSWER: call or invocation9. What is the output produced by the following code fragment? int i = 3;cout The value of i is sqrt(pow(i,4.0) endl;ANSWER: 9.010. The black box analagy demonstrates the concept of _.ANSWER: information hiding or procedural abstraction11. A problem-solving approach that starts with the big problem and breaks it down into smaller pieces is called _.ANSWER: top-down approach12. Algorithms are typically described in _.ANSWER: psuedocode13. Varibles that are declared inside a function are said to be _ to that function.ANSWER: local14. The _ of a variable is where that variable can be used.ANSWER: scope15. Constant variables that might be used in different functions should be _ANSWER: globalMultiple Choice1. What is the value of x after the following code fragment executes?float x = 36.0;x = sqrt(x);a. 36.0b. 6.0c. 3.0d. 2.456ANSWER: B2. What is the output of the following program fragment?cout pow(4,2) endl;a. 4b. 2c. 8d. 16ANSWER: D3. What is the output of the following program fragment?cout static_cast(3)/4 endl;a. 3b. 0.5c. 0d. 0.75ANSWER: D4. using namespace std; tells the compilera. where to get the definitions of certain objects (variables)b. where your program is locatedc. what language to use for input and outputd. nothingANSWER: A5. the fabs(double num) function a. returns the most fabulous numberb. returns the largest whole number = numc. returns the negative value of numd. returns the absolute value of num ANSWER: D6. What is the output of the following program fragment?cout static_cast(3/4) endl;a. 3b. 0.5c. 0.0d. 0.75ANSWER: C7. If you need to write a function that will compute the cost of some candy, where each piece costs 25 cents, which would be an appropriate function declaration?a. int calculateCost(char name);b. char calculateCost(int count);c. int calculateCost int count;d. int calculateCost(int count);ANSWER: D8. What is the value returned by the following function?int function()int value = 35;return value + 5;value += 10;a. 35b. 40c. 50d. 10ANSWER: B9. When overloading a function, what must be true?a. The names should be different with the same number and/or types of parameters.b. The names should be the same with different number and/or types of parameters.c. The names should be different with different number and/or types of parameters.d. The names should be the same with the same number and/or types of parameters.ANSWER: B10. When parameters are passed between the calling code and the called function, parameters and arguments are matched by:a. their data typesb. their relative positions in the parameter and argument listsc. their namesd. they are not matched up at all.11. If you have the two functions as shown, int someFunction(int value); float someFunction(float value); and a variable x, which is a double, which function is called by the following statement? cout someFunction(x);a. void someFunction(int value);b. void someFunction(float value);c. Nothing, it is a syntax errord. both functions are calledANSWER: C12. Which of the following are valid function calls to the fabs function?a. fabs(3.5);b. cout fabs(3.5);d. fabs(cin x);e. a,b and cf. a and bANSWER: F13. Multiple arguments to a function are separated bya. commentsb. semicolonsc. colonsd. commase. periodsANSWER: D14. The functions pow(), sqrt(), and fabs() are found in which include file?a. cstdlibb. cmathc. iostreamd. regularANSWER: B15. The expression static_cast(3) is called aa. type castb. nultiplierc. doublerd. polymorphismANSWER: A16. If the variable x has the original value of 3.4, what is the value in x after the following?cout static_cast(x);a. 3.4b. 4c. unknownd. 3ANSWER: D17. What is the value of the following?floor(4.999) + ceil(2.0)a. 6.999b. 7.0c. 6.0d. 8.0ANSWER: C18. What is the value of the following?sqrt(sqrt(pow(2,4);a. 1b. 2c. 4d. 16ANSWER: B19. Using functions in a program is known asa. data abstractionb. procedural abstractionc. poor programming styled. calculusANSWER: B20. Which of the following are valid function calls to the pow function?a. pow(int x, int y);b. pow(2);c. pow(1.1,3.0);d. double pow(1.1,3.0);ANSWER: C21. If you have the following variable declaration in your program,const int SIZE=34; then which of the following statements are legal?a. SIZE +;b. x = SIZE-;c. cout SIZE;ANSWER: C22. In the function declaration shown, the mechanism used to call this function is known as:double pow(double base, double exp);a. pass by nameb. pass by valuec. pass by named. call by nameANSWER: B23. What is the value of i after the following function call?/function definitionint doSomething(int value)value = 35;return value;