what is a logic error (explanation with example) ?
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A logic error is a condition encountered by a computer program where a result's not logically correct, however isn't reportable as an error. A program experiencing a logic error is very dangerous, as a result of it should report incorrect results as true. A logic error will not cause the program to crash, therefore the error is troublesome for its developers to determine and resolve
What will Logic Error Mean?
A logic error is a mistake during a program’s ASCII text file that offers thanks to unlooked-for and incorrect behaviour. A logic error is assessed as a kind of software error that may end in a program manufacturing Associate in Nursing incorrect output. It also can cause the program to crash once running.
Logic errors aren't continually straightforward to acknowledge at once. this is often because of the very fact that such errors, in contrast to that of syntax errors, are valid once thought-about within the language, however don't manufacture the meant behaviour. These will occur in each taken and compiled languages.
A logic error is also called a logical error.
Logic errors cause a program to figure incorrectly. for instance, in PHP, once "if ($i=1) " is incorrectly entered rather than "if ($i==1) ," the previous suggests that "becomes" whereas the latter suggests that "is capable." the wrong if statement would continually come back TRUE as assignment one to the variable $i. within the correct version, though, the statement solely returns TRUE once the worth of variable $i is capable one. The syntax within the incorrect case is utterly correct as per the language. So, the code would compile with success while not manufacturing any syntax errors. However, throughout runtime of the code, the resultant output is also wrong, therefore showing that a precise logic error has occurred. Logic errors tend to be hidden within the ASCII text file and might usually be more durable to work out and rectify, in contrast to syntax errors that ar recognized at compile time.
A logical error during a program is a mistake were the directions given within the program don't accomplish the meant goal.Analogy"Get American state a cup of occasional." may be a logical error once the person meant to elicit a cup of tea.ExampleIn laptop programs, this error will occur in many alternative forms. a straightforward example is once a applied scientist assigns the incorrect price to a variable.These errors are terribly troublesome to trace down as a result of the compiler can't offer help.
Logical errors can also result from faulty knowledge that was utilized by a properly written program with none internal logic errors of its own. this is often adore the common expression "garbage in, garbage out." If knowledge is incorrectly entered into the program, even though the program is dead properly, the result's a mistake compared with what was expected.
As Associate in Nursing example of another form of logic error, whereas at a stop sign, a driver would possibly prefer to flip right or flip left. If the motive force turns to the proper once the meant destination was to the left, this might be thought-about a logical error. Technically, the motive force operated the vehicle properly, however the ending result wasn't as anticipated. As illustrated during this example, errors in logic aren't restricted to the realm of computer programming. A logic error additionally can be categorised as a fallacy with respect to communications.
In another example within which logic errors exist, word processors would possibly generally use an automatic spell checker; these spell checkers are ill-famed for missing logic errors. as an example, the noun “sale” can be distorted by the noun “sail” during a sentence. every word is spelled properly, sounds correct and can be grammatically correct inside the sentence, however the definition for one word won't match the context of the actual sentence.
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