Chapter 6: How Do I Ensure That a Program Works as Intended?

Question 1

Data validation

Answer 1

Process of ensuring input data supplied to the system satisfies a set of requirements

Question 2

Length check

Answer 2

Ensure that the input data is not too short or too long

Question 3

Range check

Answer 3

Ensure that input data is within the required range of values

Question 4

Presence check

Answer 4

Ensure that all required inputs are provided

Question 5

Format check

Answer 5

Ensure that input data matches required arrangement or pattern

Question 6

Syntax error

Answer 6

Errors that cause the translation process from source code to machine code to fail

Occur when the compiler or interpreter tries to translate the source code to machine code

Due to spelling mistakes or the incorrect sequence of symbols in source code

Question 7

Run-time error

Answer 7

Errors that occur while a program is running, usually causing the program to crash or hang

Occur when the program is being run

Due to incorrect use of commands, input data that has not been properly validated or conditions occurring outside of the program’s control

Question 8

Logic error

Answer 8

Errors that occur while a program is running but usually do not cause the program to crash or hang immediately; instead the program does not give the expected output

Occur when the program is being run

Due to use of an incorrect or incomplete algorithm

Question 9

Crash

Answer 9

Sudden stop of a program due to an error

Question 10

Hang

Answer 10

Unresponsiveness of a program due to an error

Question 11

Normal conditions

Answer 11

Situations where input data follows what is expected during normal use of program

Question 12

Boundary conditions

Answer 12

Situations where input data follows what is expected during normal use of program

Question 13

Error conditions

Answer 13

Situations where input data would normally be rejected by the program

Question 14

Bug

Answer 14

Defect in a program that causes it to behave in an unintended manner

Question 15

Debugging

Answer 15

Process of identifying and removing defects from a program

Question 16

Breakpoint

Answer 16

Position in source code that is chosen for a program to pause or stop, usually for debugging purposes

Question 17

Step in

Answer 17

Moves the current step into source code for any function called at the current step; otherwise moves the current step to the next line of source code

Question 18

Step out

Answer 18

Runs the program until either a breakpoint is reached or the current function being called ends, then moves the current step to where the program is paused

Question 19

Step over

Answer 19

Moves the current step to the next line of source code