Question 1

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);

Accepted Answer

The answer of What is the value of i after...

Question 2

Using functions in a program is known as

Accepted Answer

Using functions in a program is known as procedural abstraction, where a complex program is broken down into smaller, manageable procedures or functions. This approach simplifies the code and makes it easier to understand, test, and maintain. Data abstraction is a separate concept that involves hiding implementation details and providing a simplified interface for the user. Poor programming style is not a valid choice, and calculus is not related to this question.

Question 3

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);

Accepted Answer

The initial value of `product` is set to 0. When entering the loop, any number multiplied by 0 will always result in 0, hence the factorial calculation does not proceed as intended. The correct initial value for a factorial calculation should be 1.

Question 4

If you have the following variable declaration in your program,
Const int SIZE=34;
Then which of the following statements are legal?

Accepted Answer

Option A is not legal because const variables cannot be modified.
Option B is not legal because it tries to modify the constant variable SIZE.
Option D is not legal because we cannot read value into a constant variable using cin. 
Option C is the only legal statement in this case because it simply prints the value of the constant variable SIZE.

Question 5

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

Accepted Answer

Option C is correct because it has a different parameter list (an additional float parameter) compared to the original function, which is a requirement for function overloading. Overloading allows multiple functions to have the same name but different parameters.

Question 6

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

Accepted Answer

The mechanism used in this function is pass by value, as the arguments are passed as copies of their original values rather than as references to the original objects.

Question 7

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

Accepted Answer

The expression simplifies as follows: sqrt(sqrt(pow(2,4))) = sqrt(sqrt(16)) = sqrt(4) = 2.

Question 8

Information Hiding is analogous to using

Accepted Answer

Information hiding is a concept in software engineering where certain information is kept hidden from the user and is only accessible through a specific interface. This interface acts as a "black box" for the user, as they do not have knowledge of the internal workings of the system. Therefore, the best choice from the given options is B, a black-box methodology.

Question 9

Which of the following are not legal function declarations?

Accepted Answer

Function names cannot start with a digit, making option B incorrect as it starts with "3".

Question 10

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

Accepted Answer

The value of the actual parameter is passed to the function definition.

Question 11

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

Accepted Answer

Option A is invalid because the function name and parameter types are not enclosed correctly.
Option B is invalid because it does not contain any parameters.
Option C is valid because it includes two numeric parameters separated by a comma, representing the base and exponent values for the power operation.
Option D is invalid because there should not be a data type specified as part of the function call.

Question 12

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;

Accepted Answer

The code calculates the size of a cube with a volume of 16.0. The correct answer is 0.67, which is the cube root of 16.0 divided by 3.

Question 13

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

Accepted Answer

When a variable is local to a function, it has a scope of the function, meaning that it can only be accessed within that function and not outside of it. Therefore, option C is the correct choice.

Quiz 4: Procedural Abstraction and Functions That Return a Value

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) ;

Using functions in a program is known as

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) ;

If you have the following variable declaration in your program, Const int SIZE=34; Then which of the following statements are legal?

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

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

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

Information Hiding is analogous to using

Which of the following are not legal function declarations?

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

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

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;

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