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Algorithm Knowledge Quiz

Welcome to the Algorithm Knowledge Quiz! This quiz is designed to test your understanding of algorithms, data structures, and programming concepts. Whether you are a student eager to enhance your skills or a seasoned programmer looking to refresh your knowledge, this quiz is for you!

Multiple choice questions covering key topics.
Assess your comprehension of logic, arrays, functions, and more.
Challenge yourself and learn as you go!

106 Questions26 MinutesCreated by CodingMaster42

Specify the types of operator

Logical, Bitwise, Arithmetic, Relational

Mathematical, Bitwise, Arithmetic, Relational

Assignment, Bitwise, Arithmetic, Relational

Logical, Bitwise, Assignment, Relational

Logical operators always evaluated from

Right to left

Not sure

No difference

Left to right

When an equation uses more than one type of operator then the order of precedence has to be established with the different types of operators:

Comparison, logical, arithmetic

Logical, arithmetic, comparison

Arithmetic, comparison, logical

Arithmetic, logical, comparison

Precedence for Logical Operators

OR, NOT, AND

OR, AND, NOT

NOT, AND, OR

AND, OR, NOT

What is an array?

An array is a series of elements of the same type placed in contiguous memory locations that can be individually referenced by adding an index to a unique identifier

An array is a series of elements of the different type placed in contiguous memory locations that can be individually referenced by adding an index to a unique.

An array is a series of elements of the same type placed in contiguous memory locations that can be individually referenced by multiplying an index to a unique identifier

An array is a series of elements of the same type placed in contiguous memory locations that can be individually referenced by adding an index to a same identifier.

When an array is partially initialized, the rest of its elements will automatically be set to zero.

True

False

Nothing

All of them

The whole array can be passed to a function. However, it can't be changed by the code in that function

True

Nothing

All of them

False

What are the three steps in using a function?

Definition, invocation, argument.

Prototype, argument, signature.

Definition, prototype, invocation.

write mpg() function prototype, that takes two type double arguments and returns a double

Float mpg(int a){ float b = 1; return b;}

Void mpg(){}

Double mpg(double a, double b)

Double mpg(int a, double b)

What is data structure?

is a group of data elements grouped together under one name.

is a group of data elements grouped together under two names.

is a set of some elements grouped together under value.

is a group of data elements together with some name.

The data elements in structure are also known as what?

Objects

Data

Members

None of the above

What will be used when terminating a structure?

Brackets

Colon

Semicolon

Dot

Which stream class is used to both read and write on files?

Ifstream

Ofstream

Iostream

Fstream

Which stream class is only used to read files?

Ifstream

Ofstream

Iostream

Fstream

What is the difference between array and structure?

Only on their declaration

No difference

Structure can include members of different data types

Arrays can include only integers

17. The OR (||) operator:

Has higher precedence that AND (&&) operator

Stops evaluation upon finding one condition to be true

Associates from right to left

True if all conditions are true

Which of the following for headers is not valid for C++ code?

for (int I = 0; i<9; i++)

for (int I = 0; i<8; i++)

for (integer I =0; j<10; i++);

for (int I = 0; i<7; i++)

all

There might be functions with the same name, but different arguments. The function called is the one whose arguments match the invocation. What is this mean?

Function overloading

Function overprocessing

Argument type error

Argument dispatch error

Which of the following cannot be used to create a random numbers?

structures

float

int

none of the mentioned

Please evaluate !(1 && !(0 || 1)).

True

False

Unevaluatable

Not sure

How many times is a do while loop guaranteed to loop?

Infinitely

Variable

What is the final value of x when the code int x; for(x=0; x<50; x++) {} is run?

Which of the following is a valid function call (assuming the function exists)?

funct;

funct x, y;

funct();

struct funct();

Which of the following is a complete function?

int funct();

int funct(int x) {return x=x+1;}

void funct[int] {cout&tl;<"Hello"}

void funct{x} {cout<<"Hello"}

Which of the following is required to avoid falling through from one case to the next?

End;

Break;

Stop;

A semicolon;

Which of the following is the proper declaration of a pointer?

int x;

int &x;

ptr x;

int *x;

Which of the following gives the memory address of integer variable a?

*a;

&a;

address(a);

Which of the following gives the memory address of a pointer a?

*a;

&a;

address(a);

Which of the following gives the value stored at the address pointed to by the pointer a?

val(a);

*a;

&a;

32. Which of the following gives the value stored at the address pointed to by the pointer ptr?

ptr;

val(ptr);

*ptr;

&ptr;

Which of the following accesses a variable in structure b?

b->var;

b.var;

b-var;

b>var;

Which of the following accesses a variable in structure mystruct?

mystruct ->var;

mystruct.var;

mystruct -var;

mystruct >var;

Which of the following correctly accesses the seventh element stored in diana, an array with 100 elements?

diana[6]

diana[7]

diana(7)

diana;

What is the correct way to write the condition y < x < z?

((y < x) && (x < z))

((y < x) || (x < z))

((y < x) & (x < z))

((y < x) AN (x < z))

The value 132.54 can represented using which data type?

Double

Void

Integer

Bool

In an assignment statement “ a=b; ” which of the following statement is true?

The variable a and the variable b are equal.

The value of b is assigned to variable a but the later changes on variable b will not effect the value of variable

The value of b is assigned to variable a and the later changes on variable b will effect the value of variable a

The value of variable a is assigned to variable b and the value of variable b is assigned to variable a.

The difference between while structure and do structure for looping is

In while statement the condition is tested at the end of first iteration

In do structure the condition is tested at the beginning of first iteration

The do structure decides whether to start the loop code or not whereas while statement decides whether to repeat the code or not

In while structure condition is tested before executing statements inside loop whereas in do structure condition is tested before repeating the statements inside loop

A function that calls itself for its processing is known as

Inline Function

Nested Function

Overloaded Function

Recursive Function

The keyword endl

Ends the execution of program where it is written

Ends the output in cout statement

Ends the line in program. There can be no statements after endl

Ends current line and starts a new line in cout statement

42. Strings are character arrays. The last index of it contains the null-terminated character

Variables inside parenthesis of functions declarations have _____ level access

Local

Global

Module

Universal

44. Array indexing always starts with the number

-1

Which of the following accesses a variable in structure st1?

st1->var;

st1.var;

st1-var;

St1>var;

Which looping process is best used when the number of iterations is known?

For

While

Do-while

Nothing

If there is more than one statement in the block of a for loop, which of the following must be placed at the beginning and the ending of the loop block?

parentheses ( )

Braces { }

Brackets [ ]

arrows < >

A memory address is…

where a variable is stored.

where a variable is defined.

where a variable is declares.

Where a variable is print out.

The set of instructions that a computer will follow is known as..

program

variable

Computer

brackets

cin >> number; is

an output statement

a colon

a variable

an input statement

cout << "How many items would you want?\n"; is

an output statement

a colon

a variable

an input statement

int number; is

an output statement

a variable declaration

a variable

an input statement

int number; is

an output statement

a variable declaration

a variable

an input statement

If x is 0, what is the value of (!x == 0)?

True

False

How to create array with n integers?

int n; cin >> n; int a = new# int[n];

int n; cin >> n; int& a; a = new int[n];

int n; cin >> n; int* a; a = new int[n];

int n; cin >> n; int a; a = new% int[n];

Which class should be included to work with files?

iostream

string

cmath

fstream

Which of the following is the valid array declaration

int num(5)

int mycat[5]

Array. double[5] marks

Myarray.counter int[5]

If the type specifies of parameters of a function is followed by an ampersand &, that function call is…

Pass by value

Pass by reference

All of answers

None of answers

Which of the following gives the memory address of a pointer pt1?

*pt1;

pt1;

&pt1;

address(ptr1);

Which libraries should be included to get string in a file?

<string> is enough

<fstream> is enough

There is given string named “str”. How to print in command line length of str?

cout << str.count();

cout << str.length;

cout << str.lenth();

cout >> str.lenth();

How to implement array of chars with 10 elements?

char* chs; chs = new char(10);

char chs; chs = char[10];

char chs[10];

char chs[] = new char[10];

103. How to implement array of integer numbers with n elements, and how to delete them correctly?

int n; cin >> n; int* a; a = new% int[n]; delete[] a;

int n; cin >> n; int& a; a = new int[n]; delete[] a;

int n; cin >> n; int* a; a = new@ int[n]; delete[n] a;

int n; cin >> n; int* a; a = new& int[n]; for(int i=0; i

How to get whole string in one line (in command line)?

string s; getline(cin, s);

string s; getline(cout, s);

string s; cin >> s;

string s; cout << s;

How to get whole string in one line (in file)?

ifstream file; string s; getline(file, s);

ifstream file; string s; getline(cin, s);

ifstream file; string s; getline(cout, s);

ifstream file; string s; file >> s;

Why do we need library <fstream>?

To work with strings.

To work with files.

To work with mathematical functionsю

To work with our own libraries.

Why do we need library <cmath>?

To work with strings.

To work with mathematical functions.

To work with command line.

To work with our own libraries.

Which of the following is the proper keyword to allocate memory?

new

malloc

create

value

112. Which of the following is the proper keyword to deallocate memory?

free

delete

clear

remove

Assume if A = 10; and B = 15; with using bitwise OR operator Find A||B

Find the operator

+у

&х

5+9*3*3-4>10&&(2+16-8/4>6||(2<6&&10>11))

True

False

Nothing

All of them

Assume if A=60;and B=13; with using bitwise OR operator.Find A||B

How many times the current loop will execute? For(int i=0;i<=5;i+=3);

3 times

2 times

Never

5 times

Infinite loop

118. There are two different ways to implement multi selections in C++ language. They are

Else if- and switch case

If…else and switch case

Else if

Not sure

A two-dimensional array represents data in the form of table with rows and columns

True

False

Nothing

All of them

Which statement of array is true?

Int foo[5]={10,20,30};

Int foo[]{10,20,30};

Int foo[3]={10,20,30};

Int foo[];

What are strings?

Strings are objects that represent sequences of characters

Strings are objects that represent sequences of pointers

Strings are objects that represent sequences of special words

Strings are objects that represent sequences of structures

In which data type we write text

String

Int

Float

Double

Choose the right syntax to define a function

name [parameter1, parameter2]

type (parameters)

parameter1, parameter2(name)

type name(parameter1, parameter2)

A function can return more than one value

True

false

the factorial function

if(n-1){return n*factorial(n-1);} else {return 1;}

n!=n*(n+1)!

n!=n-(n-1)! And 1!=1

n!=n/(n-1)! And 1!=1

which of the following are themselves a collection of different data types?

String

Structure

Char

Integer

Which of the following is address of operator represented by?

Pointers may be compared by using relational operators

True

False

What will be used between the object name and the member name?

Dot

Semicolon

Colon

Anything

Which of the following shows the correct syntax for an if statement?

If expression

If(expression)

If{expression}

Expression if

When does the code block following while(x<100)execute?

While it wishes

When x is less than one hundred

When x is greater than one hundred

When x is equal to one hundred

Which of the following properly declares struct?

Struct a_struct int a;

Struct a_struct {int a;};

Struct a_struct {int a;}

Struct {int a;}

Which of the following properly declares a variable of struct foo?

Struct foo;

Foo var;

Foo;

Int foo;

Which of the following correctly declares an array?

Int anarray[10];

Int anarray;

Anarray{10};

Array anarray[10];

What is difference between array and structure?

Only on their declaration

No difference

Structure can include members of different data types

Arrays can include only integers

Which of the following is the right declaration of the structure student:

struct Alua{};

struct student:Alua{}

struct student{string name;int age};

student.Alua{};

struct student=Alua{};

there is an array with 29 elements ,what is the index number of the last array

Array does not have element’s index

What character ends all strings?

‘,’

‘’

‘\0’

‘\n’

What is the index number of the last element of an array with 9 elements?

Nothing

What punctuation ends most lines of c++ code?

Dot

Semi-colon

Colon

Single quote

Which of the following identifiers(variable names)is invalid?

My*number

MyNumber

Mynumber

My7number

Which of the following is not a valid relational operator?

When following piece of code is executed, what happens, if b=3;a=b++;?

A contains 3 and b contains 4

A contains 4 and b contains 4

A contains 4 and b contains 3

A contains 3 and b contains 3

Which of the following is output statement in c++?

Write

Cout

Cin

. Which of the following is input statement in c++?

Cin

Input

Get

None of them

Which of the following is selection statement in c++?

Break

Goto

Exit

Switch

Which of the following is not a looping statement in c++?

While

Until

For

Looping in a program means?

Jumping to the specified branch of program

Repeat the specified lines of code

None of above

Both of above

In case of pass by reference

The values of those variables are passed to the function so that it can manipulate them

The location of variable in memory is passed to the function so that it can use the same memory area for its processing

All of them

The function declaration should contain ampersand (& in its type declaration

.We declare a function with ________if it does not have any return type

Long

Double

Void

Int

Arguments of a functions are separated with

Comma(,)

Semicolon(;)

Colon

None of these

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