Question 1

When arguments are passed by value, the function works with the original arguments in the calling program.

Accepted Answer

When arguments are passed by value, the function works with copies of the arguments, not the originals.

Question 2

Which of the following can legitimately be passed to a function?
A)a constant
B)a variable
C)a structure
D)all of the above

Accepted Answer

All of the options listed (a constant, a variable, and a structure) can legitimately be passed to a function in programming. Constants and variables are fundamental data types that can be passed directly, while structures, which are more complex data types, can also be passed either by value or by reference.

Question 3

How many values can be returned from a function?
A)0
B)1
C)2
D)3

Accepted Answer

A function can technically return only one value directly. However, it can return a single value that is a collection (like a list, tuple, or dictionary) containing multiple values, but this is still considered as one return value.

Question 4

When a function returns a value, the entire function call can appear on the right side of the equal sign and be assigned to another variable.

Accepted Answer

When a function returns a value, it can be treated as an expression whose value is the return value of the function. Therefore, the function call can be placed on the right side of the equal sign, and its return value can be assigned to a variable.

Question 5

When an argument is passed by reference
A)a variable is created in the function to hold the argument's value.
B)the function cannot access the argument's value.
C)a temporary variable is created in the calling program to hold the argument's value.
D)the function accesses the argument's original value in the calling program.

Accepted Answer

When an argument is passed by reference, the function accesses the argument's original value in the calling program, allowing it to modify the original variable's value.

Question 6

Overloaded functions
A)are a group of functions with the same name.
B)all have the same number and types of arguments.
C)make life simpler for programmers.
D)a and c

Accepted Answer

Overloaded functions are a group of functions that share the same name but differ in the number or types of arguments (making programming simpler by allowing the same function name to be used for different types of operations), hence options A and C are correct. Option B is incorrect because overloaded functions specifically do not have the same number and types of arguments.

Question 7

A static local variable is used to
A)make a variable visible to several functions.
B)make a variable visible to only one function.
C)retain a value when a function is not executing.
D)b and c

Accepted Answer

Static local variables are visible only within the function they are declared in, thus making them visible to only one function, and they retain their value between function calls, allowing them to preserve their state even when the function is not executing.

Question 8

In C++ there can be an array of four dimensions.

Accepted Answer

In C++, arrays can have multiple dimensions, including four or more, allowing for complex data structures.

Question 9

When an array name is passed to a function, the function
A)accesses exactly the same array as the calling program.
B)refers to the array using a different name than that used by the calling program.
C)refers to the array using the same name as that used by the calling program.
D)a and b

Accepted Answer

When an array name is passed to a function, it is essentially passing the address of the first element of the array. This means the function accesses the same array in memory as the calling program (A is correct). However, within the function, the array can be referred to by a different parameter name, making B also correct. Thus, both A and B are true, leading to D being the correct choice.

Question 10

The compiler will complain if you try to access array element 14 in a 10-element array.

Accepted Answer

The answer of The compiler will complain if you try...

Question 11

The extraction operator (>>) stops reading a string when it encounters a space.

Accepted Answer

The extraction operator (>>) used with cin in C++ stops reading input upon encountering whitespace, such as a space, tab, or newline character, which means it cannot directly read strings containing spaces without additional handling.

Question 12

You can read input that consists of multiple lines of text using
A)the normal cout <<combination.
B)the cin.get() function with one argument.
C)the cin.get() function with two arguments.
D)the cin.get() function with three arguments.

Accepted Answer

The answer of You can read input that consists of...

Question 13

You should prefer C-strings to the Standard C++ string class in new programs.

Accepted Answer

The Standard C++ string class provides more functionality, safety, and ease of use compared to C-strings, making it the preferred choice for string manipulation in new C++ programs.

Question 14

Objects of the string class
A)are zero-terminated.
B)can be copied with the assignment operator.
C)do not require memory management.
D)both b and c

Accepted Answer

Objects of the string class in C++ can indeed be copied using the assignment operator, and they manage their own memory, meaning the programmer does not need to manually allocate and deallocate memory for them.

Question 15

Can destuctors be private in C++?

Accepted Answer

In C++, destructors can be declared as private to control how and where an object of the class can be destroyed, often used in patterns like Singleton to prevent external deletion.

Question 16

What is value of size?
A)28
B)32
C)20
D)24

Accepted Answer

The answer of What is value of size?
A)28
B)32
C)20
D)24...

Question 17

What value will be printed for data.i?
A)10 220.5 230.5 unpredictable value
B)220
C)230.5
D)unpredictable value

Accepted Answer

The value of data.i is unpredictable because the context or code that defines how data.i is set or modified is not provided.

Question 18

What is the compilation error for this program?
A)each undeclared identifier is reported only once
B)cout and cin not declared in scope
C)invalid conversion from int to float
D)all of the above

Accepted Answer

The error "cout and cin not declared in scope" typically occurs when the iostream header is not included or the std namespace is not used, as cout and cin are part of the standard library in C++. The other options are not compilation errors directly related to the use of cout and cin.

Question 19

What will be the output of the program?
A)1
B)default value
C)will not compile
D)none of the above

Accepted Answer

Without the actual program code provided, it's impossible to determine the specific output. However, the question implies there's an issue with the program that would prevent it from compiling successfully, hence the correct choice is "will not compile."

Question 20

What is the output of the program?
A)0 0
B)x = 0 y = 0
C)0
D)compilation error

Accepted Answer

The question does not provide the program code necessary to determine the output, leading to an inability to accurately answer without additional context.

Quiz 2: C++ Function and Array

When arguments are passed by value, the function works with the original arguments in the calling program.

Which of the following can legitimately be passed to a function?

How many values can be returned from a function?

When a function returns a value, the entire function call can appear on the right side of the equal sign and be assigned to another variable.

When an argument is passed by reference

Overloaded functions

A static local variable is used to

In C++ there can be an array of four dimensions.

When an array name is passed to a function, the function

The compiler will complain if you try to access array element 14 in a 10-element array.

The extraction operator (>>) stops reading a string when it encounters a space.

You can read input that consists of multiple lines of text using

You should prefer C-strings to the Standard C++ string class in new programs.

Objects of the string class

Can destuctors be private in C++?

What is value of size?

What value will be printed for data.i?

What is the compilation error for this program?

What will be the output of the program?

What is the output of the program?