Computer Science

data that should not be accepted by the program or it will cause an error.

data that should either be accepted or rejected by a program; it tests the data right at the boundary of a range.

data that should be accepted by a program. This is data that you would expect a user to enter.

Programming project: subroutines II

In this unit pupils will be introduced to structured programming. They will explore the differences between functions and procedures and use functions to return values in programs. They will be introduced to the concept of scope and how parameters can be used to reduce the need for global variables.

Programming: subroutines

to test the final version of the program only

to test throughout the program's creation and fix errors early

to ensure the program runs without any debugging

What is the purpose of iterative testing in programming?

Which type of test data is used to check that values at the edge of a range are accepted?

the program is still in the early design phase.

A test {{}} is a way to thoroughly check that a program is working correctly.

Using a {{}} of test data helps ensure that a program correctly handles all possible inputs.

data that should not be accepted because it causes an error

data that should be accepted as valid input

Match the test data type with its meaning.

to visually represent the steps of an algorithm

to decide the hierarchy of subroutines in a program

What is the purpose of a structure chart?

Which flowchart symbol is used to represent a decision?

a function that runs at the start of a program

Which of the following correctly defines a parameter in a subroutine?

A {{}}chart is a diagram used to illustrate the steps of an algorithm.

Match the flowchart symbols with their meaning.

What should be used if a subroutine needs to pass a value back to the main program?

Introduction

What will you need for this lesson?

Are you ready to learn?

Equipment

Worksheet