Supplement explanations with examples that illustrate how to correct the problem.
Not recommended
Invalid email address.
Recommended
The specified email address (robin) is missing an @ sign and a domain name. For example: robin@example.com.
Not recommended
Invalid input.
Recommended
Enter the pathname of a Windows executable file. An executable file ordinarily ends with the .exe suffix. For example: C:\Program Files\Custom Utilities\StringFinder.exe
Not recommended
Do not declare types in the initialization list.
Recommended
Do not declare types in the initialization list. Use calls instead, such as ‘BankAccount(owner, IdNum, openDate)’ rather than ‘BankAccount(string owner, string IdNum, Date openDate)’
Not recommended
Syntax error on token ”||”, “if” expected.
Recommended
Syntax error in the “if” condition.
The condition is missing an outer pair of parentheses. Add a pair of bounding opening and closing parentheses to the condition. For example:
if (a > 10) || (b == 0) # Incorrect
if ((a > 10) || (b == 0)) # Correct
Multiple choice exercise
Which of the following error messages is best for an audience of people who drive cars?
The specified license plate (QB2 481) is invalid. For example: MBR 918 and NRS 727 are both valid license plates.
The specified license plate (QB2 481) is invalid. Valid license plates start with three uppercase letters and end with three digits. For example: MBR 918 and NRS 727 are both valid license plates.
The specified license plate (QB2 481) is invalid because license plates must start with three letters and end with three digits.