Types of errors

Question 1

Types of errors

Answer 1

Compilation error
◦ Semantic error
◦ Syntax error
Logical error
Runtime error or Exception

Question 2

Syntax error

Answer 2

• An error which occurs when programmers violate the rules of writing the statements of the programming
  language.
• It is caught by the compiler.

Question 3

Semantic error

Answer 3

• Caught by the compiler during the time of compilation
• Occurs when:
  ◦ Using the ++ or – operator with a Boolean
  variable

◦ Declaring a variable twice using the same data type
or different data type.

◦ Type incompatibility

◦ Using a non-initialized variable in the program.

Question 4

Logical error

Answer 4

Occurs due to mistakes in programming logic

The programmer has to trace this type of
error.

When the program does not give the
expected output, then it is said to have a
logical error.

Can be the hardest errors to find. You need
to spend time going through your code
looking for a precise reason for the error

Question 5

Runtime error or exception

Answer 5

• This occurs during the execution of the
  program and it causes the program to end
  abruptly.
• The programmer has to anticipate these types
  of errors while writing the program.
• Occurs when
  ◦ a numeric literal or variable is divided by zero
  ◦ when the user inputs a string or a character, where
  a number is expected.