Download C++ and Linux Exam Q&A: Vim, Syntax, and Commands and more Exams Nursing in PDF only on Docsity!
CECS 325 – Final Exam Questions and Answers
What key is used to enter insert mode in Vim?
I
How can you save changes to a file and exit Vim?
- :exit
- :wq
- :write&exit
- :save&quit :wq What does the u key do in normal mode?
- Moves the cursor to the end of line
- Undoes the last change
- Deletes the current line
- Copies the current line Undoes the last change How do you search forward for a specific word in Vim?
- #word
- ?Word
- /word
- &word /word Which command is used to copy the current line in normal mode?
- Pp
- Cc
- Yy
- Dd Yy How can you move the cursor to the beginning of the current line?
- 0
- G
- H
- $
What does the command :q! Do?
- Exits without saving changes
- Saves changes and exits
- Quit Vim with confirmation
- The correct answer is not listed Exits without saving changes Which mode allows you to navigate and manipulate highlighted text?
- Insert mode
- Command mode
- Replace mode
- Visual mode Visual mode What does the :help command do?
- Displays a help message
- Creates a new Vim session
- Opens a file for editing
- Opens a new empty buffer Displays a help message What statement is true about the C++ language?
- It is interpreted
- It is compiled
- None of these answers are correct
- It was invented in 1968 It is compiled How do you create an array of 20 integers called nums in C++?
- Int nums = new int[20];
- Nums[20]
- Int nums[20];
- Integer nums[20]; Int nums[20]; In the C++ language when building a class, the function prototypes must be in a header file (.h) and the implementation must be separate in the .cpp file
- True
- False False
Suppose there is a class called Card which is a playing card and suppose I have a vector of cards called deck. Consider the following code segment: Vector deck; // create a vector of cards Card c1('A','S'); // create a card ????? // add the card to the deck What is the statement that will add the card to the deck?
- Deck.put(c1);
- Deck.push_back(c1);
- Deck.add(c1);
- Deck = c1; Deck.push_back(c1); What is the name of the linux root directory?
- ./
- ../
- /
- Root
Suppose I have a file numbers.dat with the number 1 through 1000 sorted, one number per line. What will be printed on the screen if I typed this command sequence: $ more numbers.dat | tail - 100 | head
- 20 | tail - 1
- 920
- None of these answers are correct
- 901
- 921
Consider the following code segment in C++ Int A [] = {0, 1, 2, 3, 4, 5}; Int *ptr = A; How would I print 5 to the screen?
- Cout << ptr*5;
- Cout << ptr + 5;
- Cout << ptr[5]; Cout << ptr[5];
Consider the following C++ code: int a = 10; Int *ptr = &a; cout << ptr; What is printed out?
- The memory address of ptr
- The number 10
- The memory address of a
- The contents of a The memory address of a
Consider the following segment of code in C++: Int nums[10] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; Printarray(nums); Also consider this function: Void printarray(int n[]) { For(int i = 0, int < n.size(), i++) cout << n[i]; } How many numbers will the printarray() function actually print out?
- All the numbers in the array
- 10
- 1
- The correct answer is not listed The correct answer is not listed Consider the following program. What will be the output? #include <iostream? #include using namespace std; int main() { Vector v; For(auto i = 0l i < 10; i++) v.push_back(i*5); vector::interator it = v.begin(); cout << *(it+3); Return 0; }
- It will not compile
- 5
- 3
- 15
Assume the following code segment: Struct student { String name; int age; char grade; }; Student s1, *sptr; sptr = &s1; S1.name = "mastergold"; What code would you use to set Master Gold's grade to A?
- S1 - > grade = 'A';
- Mastergold - >grade = 'A';
- The correct answer is not listed
- Sptr.grade = 'A' The correct answer is not listed Assume the following C++ code segment: Struct student { String name; int age; char grade; }; Student s1, *sptr; sptr = &s1; S1.name = "mastergold"; What code would you use to set Master Gold's age to 49?
- The correct answer is not listed.
- Student.age = 49;
- Sptr.age = 49;
- Sptr->age = 49; Sptr->age = 49; The function pthread-create() has how many parameters?
- 3
- 2
- 1
- 4 4 parameters
Consider the following C++ code segment: Char world[10] = "matrix"; cout << strlen(word);
- Matrix
- 6
- The correct answer is not listed
- 10
The function pthread_create() allows a program to have multiple threads running concurrently.
- True
- False True Consider the following C++ code segment: char name[15] = "ponyexpress"; Char * cptr = name; name = "cowboy"; cout << name; Which of the following is true:
- You can't assign an array to a pointer
- Cowboys can't be in the Pony Express
- You can't assign "cowboy" to name
- There is overflow on the first line You can't assign "cowboy" to name In which c++ library is strlen( ) found? The correct answer is not listed. What is another name for "null terminated character array"
- Word
- Container
- C-string
- The correct answer is not listed C-string
What is the error int the following function definition? Int doubler(int old_value) { Double new_value = old_value * 2; }
- No error
- The function returns a value of type double
- The function attempts to modify its input parameter
- The function does not return a value The function does not return a value
