Code Master - CN

What is the purpose of the `#include <stdio.h>` directive in C?

• To include standard input/output functions

• To define a macro

• To include math functions

• To include string manipulation functions

What is the output of `printf("%d", sizeof(char))`

• 1

• 2

• 4

• depends on compiler

Which sorting algorithm has the worst-case time complexity of O(n^2)

• Merge Sort

• Quick Sort

• Bubble Sort

• Insertion Sort

In a binary search tree (BST), what is the maximum number of children a node can have?

• 3

• 2

• 1

• undefined

What does FIFO stand for?

• First In, First Out

• First Input, First Output

• First In, First Ordered

• First Index, First Out

Which of the following data structures is not linear

• Array

• Linked List

• Stack

• Tree

What is the output of `print("hello" + 3)` in Python

• hello3

• hellohellohello

• Error

• None of the above

What does the `pop()` method do on a Python list

• Removes the last element from the list and returns it

• Adds an element to the end of the list

• Returns the index of the specified element

• Sorts the list in ascending order

Which of the following is not a valid way to open a file in Python

• open("file.txt", "r")

• open("file.txt", "write")

• open("file.txt", "a")

• open("file.txt", "rb")

Which of the following is not a valid data type in C

• float

• boolean

• char

• double