Topic 17b: Design, Testing and Documenting Solutions

Question 1

Program errors fall into 3 categories and these are

Answer 1

syntax errors, execution errors and logic errors.

Question 2

Syntax errors occur as a result of

Answer 2

incorrect use of programming language. E.g. wrong word or missing brackets

Question 3

Execution errors are errors that

Answer 3

only become apparent once the program is run. E.g. a variable involved in a calculation should be an integer but it is mistakenly set as a string

Question 4

Logic errors are when

Answer 4

a program has wrong commands or the commands are nor in the correct order or sequence

Question 5

Input validation is a

Answer 5

conditional loop structure designed to allow only valid data to be entered into a program. The conditional statement specifies criteria for data to be accepted

Question 6

Pre-defined functions are used to

Answer 6

save a programmer time by activating code using a single command. The code has already been written and tested and saved to a function library for later use.