SDD Flashcards
What is an input
Data entered into a computer
What is the purpose of the analysis stage
To when given a problem identify what the program is meant to do
What is a process
the computer program transforms any data from inputs into some form of information that can be output
What is an output
The result of any process returned to the user
What are the data types
Boolean, string, character, float and integer
What is the Boolean dot type
Used to store a value which can be true or false
What is a string data type
Used to store a sequence of characters
What is a character data type
Used to store a single character
What is a float data type
used to store a decimal number
What is an integer data type
Used to store a whole number
What is assignment
Assignment is to set the value of a variable
What is concatenation
The merging of two or more strings together
What is the IF statement used for
Making a decision
What is the condition of the IF statement
The rule that is being tested by the IF statement,
What is the difference between a simple condition and a complex condition
A simple conditions only has one rule while a complex condition has multiple
What type of statement can follow an IF statement multiple times
An ELIF statement
What does each ELIF statement allow
An additional condition to be tested
What can follow both an IF and an ELIF statement
An ELSE statement
When will the ELSE statement be executed
When none of the proceeding conditions in the IF statement are true
What are the logical operators
AND, OR, NOT
What does the AND operator do
Ensures that both conditions are true in the if statement
What does the OR operator do
Ensure that either condition are true in the if statement
What does the NOT operator do
Reverse the result of the IF statement
What are the five arithmetic operators
+ addition, - subtraction, * multiplication, / division, ** to the power off
What are the three predefined functions
Round, random and length
What is the random predefined function
Returns a random number between two parameters
What is the round predefined function
The function returns a decimal number rounded to a given number of places
What is the length predefined function
The function returns teh full length of a string
What is normal test data used for
To show that the program works as expected
What is extreme test data used for
To test the boundary limits of the program
What is exceptional test data used for
Test that the program can handle unexpected results
What techniques make a program more readable
White spaces, internal commentary, indentation and meaningful variable names
