CS 1

Question 1

(optional, not needed)On comparing, what is 0, A, a value?

Answer 1

(optional, not needed)What has a value of 48, 65, 97?

Question 2

What is the result of 3/4?

Answer 2

(ignore when on this side)0.75

Question 3

explain +=, such as x += 52

Answer 3

(ignore when on this side) += means it adds upon, x = x + 52

Question 4

How can you take the value for a variable from the user via the input

Answer 4

(ignore when on this side) input()
such as inp = input()

Question 5

What does ', \n, \t do?

Answer 5

How do you make new line, tab, and a single quote?

Question 6

How do you import math to import all functions directly

Answer 6

(ignore when on this side) from math import *(must use dot-notation)

Question 7

How would you import sqrt function only directly? and what is the function for square root

Answer 7

(ignore when on this side)from math import sqrt
sqrt()

Question 8

(optional, not needed) How do you import the random function and what is the function for random and what do you need? How do you do randomint and to pick out of a list such as “[ ]”(uses different random function)

Answer 8

(ignore when on this side) import random

print(random.randint(5, 10))
print(random.randint(5, 10))

import random
t = [1, 2, 3]
print(random.choice(t))
print(random.choice(t))

Question 9

what keyword must you use to indicate that this is a function defintion?

Answer 9

(ignore when on this side) def

Question 10

(optional not needed)What is another way to print quotations?

Answer 10

(ignore when on this side) (f” “) like print(f”‘GeeksforGeeks’”)

Question 11

What does math.ceil() do?

Answer 11

What math.(function) does:Round a number upward to its nearest integer:
Such as print(math.ceil(1.4)) = 2
and print(math.ceil(-5.3)) = -5

Question 12

What does math.floor() do?

Answer 12

What math.(function) does: Round numbers down to the nearest integer

Question 13

What does floor division // do?

Answer 13

What rounds the result down to the nearest whole number?

Such as:
x = 15
y = 2

print(x // y)

Question 14

What does Modulus % do?

Answer 14

What gives the remainder or the number and gives the full number if can divide it?

Question 15

(optional, not needed)How does Modulus % work with negative numbers?

Answer 15

(ignore when on this side) For EX: What is -7 mod 5?

Solution: To find -7 mod 5, we firstly find the largest number that is less than or equal to -7 and divisible by 5. That number is -10. Now, in order to get remainder subtract -10 from -7(-7 -(-10), which gives 3 that is the remainder.

Recap: find largest divisble number of the divisor, than substact first number by that number.

Question 16

What does evaluate mean?

Answer 16

(ignore when on this side) it doesn’t mean true. It justs means it reaches there.

Question 17

What does a runtime error mean?

Answer 17

What error is encounterd at an issue at runtime, during program execution when the sytax is right. Such as: Division by zero.
Using an undefined variable or function name.
Performing an operation on incompatible types.

Question 18

What does a semanatic error mean?

Answer 18

What error is with a program that runs without producing error messages but doesn’t do the right thing?

Question 19

What does ls() do?

List

Answer 19

What command allows you to display the list of files and folders in a
directory?