C++ Mastery Challenge

What is the purpose of a loop in C++?

• The purpose of a loop in C++ is to repeatedly execute a block of code until a certain condition is met.

• To play music

• To send emails

• To cook dinner

How do you write a for loop in C++?

• for(int i; i < n; i++) { // code block }

• for(init; cond; update) { // code block }

• for(initialization; condition; update) { // code block to be executed }

• for(int i = 0; i < n; i++) { // code block }

What are conditional statements in C++?

• Conditional statements in C++ are used for defining functions

• Conditional statements in C++ are used for declaring variables

• Conditional statements in C++ are used to execute different code based on certain conditions.

• Conditional statements in C++ are used for loop control

How do you use if-else statements in C++?

• if-else statements are used for defining functions in C++

• The if-else statements in C++ are used to make decisions based on conditions.

• if-else statements are used for looping in C++

• if-else statements are used for printing output in C++

What is the significance of input and output operations in C++?

• Input and output operations in C++ are only used for debugging purposes.

• Input and output operations in C++ have no impact on the functionality of the program.

• Input and output operations in C++ are optional and can be omitted.

• Input and output operations in C++ are essential for interacting with users and external devices.

How do you read user input in C++?

• Using 'gets' function

• Using 'cout' and '<<' operator

• Using 'scanf' function

• Using 'cin' and '>>' operator

Explain the concept of functions in C++.

• Functions in C++ do not allow for code reusability.

• Functions in C++ are used for styling purposes only.

• Functions in C++ cannot accept input parameters.

• Functions in C++ are blocks of code that perform a specific task. They allow for code reusability

How do you declare an array in C++?

• int myArray[5];

• array myArray[5];

• int myArray();

• myArray = new int[5];

How do you access elements in an array in C++?

• arr.index

• arr{index}

• arr[index]

• arr(index)

What is the syntax for iterating over an array in C++?

• for(int i = 1; i <= arraySize; i++) { // access array elements using array[i] }

• for(int i = 0; i < arraySize; i++) { // access array elements using array[i] }

• for(int i = arraySize - 1; i >= 0; i--) { // access array elements using array[i] }

• for(int i = 0; i <= arraySize; i++) { // access array elements using array[i] }