Module 1

Question 1

Program

Answer 1

Execution of instructions one at a time, sequentially.

Question 2

CIN

Answer 2

[Characters in]- Reads user input until a whitespace is found

Question 3

COUT

Answer 3

[Characters out] Outputs

Question 4

Comments

Answer 4

Single line comments -> //

Multiple lines comments -> /* */

Question 5

Variables

Answer 5

Named places in memory in which users store values

x = 5: assigns value 5 to variable x

Question 6

Identifiers

Answer 6

Names which are chosen by the programmer:

• Start with A-Z or _
• Continue with A-Z, 1-9 or _

Question 7

Expression

Answer 7

A combination of values which evaluate to a value

Question 8

Literal

Answer 8

A value in the code ( such as 20 or “Quit” )

Question 9

Operators

Answer 9

Symbols which perform calculations on the data

Question 10

Compound Operators

Answer 10

Symbols which simultaneously perform calculations and assign the value

Question 11

Int vs Float

Answer 11

Int: used for items which are countable
Float: used for values coming from measurements

Question 12

Scientific Notation

Answer 12

• 1.5e9 = 1.5 * 10^9

- 1.5e-9 = 1.5 * 10^-9

Question 13

Constant Variable

Answer 13

A variable which value is constant ant cant be changed after the assignment.
- const [type]varName;

Question 14

Math Functions

Answer 14

• pow(x , y): results in x^y
• sqrt(x): results in the square root of x
• fabs(x): results in |x|

Question 15

Division

Answer 15

• int / int = int
• int / float = float
• n / 0 = Error

Question 16

Type conversions

Answer 16

• Implicit type conversions are made by the compiler
• Explicit type conversions can be made by coding:
  
  • type(value);
  • static_cast(value);

Question 17

Chars

Answer 17

• Have to be declared using single quotes ( ‘ ‘ )

- Can only store one character which is stored with its corresponding encoding value.

Question 18

Escape Sequences

Answer 18

• \n: Outputs a new line
• \t: Outputs a tab
• ' & ": Outputs single and double quotes
• \ Outputs backslash

Question 19

Strings

Answer 19

• # include
• An ensemble of characters stored in a variable
• Strings have to be enclosed in double-quotes ( “ “)

Question 20

Getline

Answer 20

Used to read user input until a newline is encountered

Question 21

Overflow

Answer 21

The situation in which the user is trying to store a value which exceeds the maximum bits amount.
All extra bits will be cut off from the result.