Deck 4: Procedural Abstraction and Functions That Return a Value

Question 1

A problem-solving approach that starts with the big problem and breaks it down into smaller pieces is called _________________.

Answer 1

top-down approach

Question 2

The black box analagy demonstrates the concept of _________________.

Answer 2

information hiding or procedural abstraction

Question 3

When you want to use a function in your program,you would make a function __________.

Answer 3

call or invocation

Question 4

The ______________ describes how the function will work.

Question 5

Converting from one type to another is called ______________.

Question 6

Algorithms are typically described in ________________.

Question 7

the parameter names are mandatory in the function header

Question 8

Functions may have multiple return statements.

Question 9

the parameters listed in the function declaration are considered global variables

Question 10

it is possible to have a function that has no parameters

Question 11

A function may return more than one item

Question 12

#include is known as an ___________________.

Question 13

In the following function declaration,the variable size is known as a _________________.
int myFunction int size);

Question 14

The absolute value function abs is located in the _________ library.

Question 15

pow2,3)is the same as pow3,2).

Question 16

Write the code to convert the value in an integer variable named count to a double._____________________.

Question 17

function naming rules follow variable naming rules

Question 18

the types of parameters are optional in the function declaration

Question 19

variables that are declared outside of any function body or parameter list are considered global.

Question 20

Every include directive must be followed by using namespace std;

Question 21

What is the value of the following?
Floor4.999)+ ceil2.0)

A)6.999
B)7.0
C)6.0
D)8.0

Question 22

Constant variables that might be used in different functions should be _________

Question 23

Multiple arguments to a function are separated by

A)comments
B)semicolons
C)colons
D)commas
E)periods

Question 24

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 calculateCostchar name);
B)char calculateCostint count);
C)int calculateCost int count;
D)int calculateCostint count);

Question 25

using namespace std; tells the compiler

A)where to get the definitions of certain objects variables)
B)where your program is located
C)what language to use for input and output
D)nothing

Question 26

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.

Question 27

What is the output of the following program fragment?
Cout << static_cast3)/4 << endl;

A)3
B)0.5
C)0
D)0.75

Question 28

What is the value of the following?
Sqrtsqrtpow2,4)));

A)1
B)2
C)4
D)16

Question 29

What is the output of the following program fragment?
Cout << pow4,2)<< endl;

A)4
B)2
C)8
D)16

Question 30

If the variable x has the original value of 3.4,what is the value in x after the following?
Cout << static_castx);

A)3.4
B)4
C)unknown
D)3

Question 31

The expression static_cast3)is called a

A)type cast
B)nultiplier
C)doubler
D)polymorphism

Question 32

The _________ of a variable is where that variable can be used.

Question 33

If you have the two functions as shown,
Int someFunctionint value);
Float someFunctionfloat value);
And a variable x,which is a double,which function is called by the following statement?
Cout << someFunctionx);

A)void someFunctionint value);
B)void someFunctionfloat value);
C)Nothing,it is a syntax error
D)both functions are called

Question 34

the fabsdouble num)function

A)returns the most fabulous number
B)returns the largest whole number <= num
C)returns the negative value of num
D)returns the absolute value of num

Question 35

What is the value returned by the following function?
Int function)
{
Int value = 35;
Return value + 5;
Value += 10;
}

A)35
B)40
C)50
D)10

Question 36

The functions pow),sqrt),and fabs)are found in which include file?

A)cstdlib
B)cmath
C)iostream
D)regular

Question 37

What is the output of the following program fragment?
Cout << static_cast3/4)<< endl;

A)3
B)0.5
C)0.0
D)0.75

Question 38

Using functions in a program is known as

A)data abstraction
B)procedural abstraction
C)poor programming style
D)calculus

Question 39

What is the value of x after the following code fragment executes?
Float x = 36.0;
X = sqrtx);

A)36.0
B)6.0
C)3.0
D)2.456

Question 40

Varibles that are declared inside a function are said to be _________ to that function.

Question 41

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;
D)cin >> SIZE;

Question 42

Which of the following are valid function calls to the pow function?

A)powint x,int y);
B)pow2);
C)pow1.1,3.0);
D)double pow1.1,3.0);

Question 43

Which of the following are not legal function declarations?

A)int ave3int a,int b,int c);
B)int 3aveint a,int b,intc);
C)int ave3int,int,int);
D)int ave_3int a1,int a2,int a3);

Question 44

When a variable is local to a function,we say that it has ___ of the function

A)value
B)constance
C)scope
D)locality

Question 45

Information Hiding is analogous to using

A)an algorithmic design
B)a black-box methodology
C)formal parameters
D)actual parameters

Question 46

What is the output of the following function call?
//function body
Int factorialint n)
{
Int product=0;
Whilen > 0)
{
Product = product * n;
N-;
}
Return product;
}
//function call
Cout << factorial4);

A)4
B)0
C)24
D)48

Question 47

What is the value of i after the following function call?
//function definition
Int doSomethingint value)
{
Value = 35;
Return value;
Value = 13
}
//fragment of main program
Int i=0;
Cout << doSomethingi);

A)13
B)35
C)48
D)0

Question 48

When the function below is called,the _____ of the actual parameters is passed to the function definition.
Double sqrtdouble value);

A)name
B)value
C)address
D)scope

Question 49

In the function declaration shown,the mechanism used to call this function is known as:
Double powdouble base,double exp);

A)pass by name
B)pass by value
C)pass by name
D)call by name

Question 50

What is the output of the following code fragement?
Double size,volume=16.0;
Size = sqrtsqrtvolume))/ 3;
Cout.setfios::fixed)
Cout.setfios::showpoint);
Cout.precision2);
Cout << size;

A)0.67
B)0.6666667
C)0.00
D)0

Question 51

Which of the following functions is a properly overloaded function of the following?
Int doSomethingint first,float second);

A)float doSomethingint first,float second);
B)int doSomething int next,float last);
C)int doSomethingint first,int second,float third);
D)int doSomeint first,float second);