Chapter Two: Input, Processing, and Output

Question 1

Programs must be designed before they are written

Answer 1

1. ) design the program
2. ) write the code
3. ) correct syntax errors
4. ) test the program
5. ) correct logic errors

Question 2

Write the code

Answer 2

each language has its own syntax that must be followed
Syntax means rules that dictate things such as how keywords, operators, and punctuation characters can be used
A syntax error occurs if the programmer violates any of these rules

Question 3

Correct syntax Errors

Answer 3

If the program contains a syntax error the interpreter will display an error message.
When first writing a program, you will have syntax errors, these are almost impossible to avoid.
Once syntax errors have been corrected, the program can be compiled and translated into machine language.

Question 4

Test the Program

Answer 4

Once the code is in executable form, it is then tested for logic errors.
A logic error is a mistake that does not prevent the program from running but causes incorrect results.

Question 5

Correct Logic Errors

Answer 5

Of the program produces incorrect results, the programmer needs to debug the code.
To debug, means that you find and correct logic errors.
Sometimes you will find that the original design must be changed. If so, then the program development cycle starts over.

Question 6

Algorithm

Answer 6

set of well-defined logical steps that must be taken to perform a task.
Steps in an algorithm are sequentially ordered and must be followed in sequence.
The algorithm must then be translated into code: Psuedocode Flowchart

Question 7

pseudocode

Answer 7

fake code
Informal language that has no syntax rule.
Not meant to be compiled or executed.
Used to retake model program.

Question 8

flowcharts

Answer 8

diagram that graphically depicts the steps in a program
Ovals are terminal symbols
Parallelograms are input and output symbols
Rectangles are processing symbols
Symbols are connected by arrows that represented the flow of the program

Question 9

function

Answer 9

piece of prewritten code that performs an operations

Question 10

print function

Answer 10

displays output on the screen

Example: print(‘Hello World’)

Question 11

argument

Answer 11

data given to a function

Example: data that is printed to screen

Question 12

string

Answer 12

sequence of characters that is used as data

Question 13

string lateral

Answer 13

string that appears in actual code of a program.

Must be enclosed in a single (‘) or double (“) quote marks

Question 14

comments

Answer 14

notes of explanation within a program

Question 15

end-line comment

Answer 15

appears at the end of a lone code

Typically explains the purpose of that line

Question 16

variable

Answer 16

name that represents a value stored in the computer memory

Question 17

assignment statement

Answer 17

used to create a variable and make it reference data

Question 18

data types

Answer 18

categorize value in memory

Question 19

numeric literal

Answer 19

number written in a program

Question 20

nested function call

Answer 20

general format: function1(function2(argument))

Question 21

math operator

Answer 21

tool for performing calculation

Question 22

operands

Answer 22

values surrounding operator

Variables can be used as operands

Question 23

exponent operator (**)

Answer 23

raises a number to a power

Question 24

multi line continuation character()

Answer 24

allows to break a statement into multiple lines