CT and Programming 1

Question 1

What are the

rules for drawing flowcharts?

Answer 1

• there should only be one start and one end symbol
• the decision symbol must have a yes and a no output arrow
• a decision symbol has only one input arrow
• lines do not cross

Question 2

What is

variable declaration?

Answer 2

when a variable is named and the computer allocates a location in its memory

The amount of memory allocated is based on the data type of the variable. A string may be allocated more memory than an integer.

Question 3

What is

variable initialisation?

Answer 3

when the very first value is assigned to a variable

Question 4

What is a

constant?

(in python)

Answer 4

a memory location that holds a value that does not change when the program is run

(uppercase should be used for the names of constants)

Question 5

What is a

bug?

(in code)

Answer 5

a difference between the expected behaviour and the actual behaviour of a computer program