Examples Of Logical Error
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unintended or undesired output or other behavior, although it may not immediately be recognized as such. Logic errors logic error c occur in both compiled and interpreted languages. Unlike a program with
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a syntax error, a program with a logic error is a valid program in the language, though it
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does not behave as intended. The only clue to the existence of logic errors is the production of wrong solutions. Debugging logic errors[edit] One of the ways to
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find these type of errors is to output the program's variables to a file or on the screen in order to define the error's location in code. Although this will not work in all cases, for example when calling the wrong subroutine, it is the easiest way to find the problem if the program uses the incorrect examples of logical fallacies in media results of a bad mathematical calculation. Examples[edit] This example function in C to calculate the average of two numbers contains a logic error. It is missing parentheses in the calculation, so it compiles and runs but does not give the expected answer due to operator precedence (division is evaluated before addition). int average(int a, int b) { return a + b / 2; /* should be (a + b) / 2 */ } See also[edit] Software Testing portal Syntax error Off-by-one error This computer-programming-related article is a stub. You can help Wikipedia by expanding it. v t e Retrieved from "https://en.wikipedia.org/w/index.php?title=Logic_error&oldid=741053015" Categories: Computer errorsProgramming language theoryComputer programming stubsHidden categories: All stub articles Navigation menu Personal tools Not logged inTalkContributionsCreate accountLog in Namespaces Article Talk Variants Views Read Edit View history More Search Navigation Main pageContentsFeatured contentCurrent eventsRandom articleDonate to WikipediaWikipedia store Interaction HelpAbout WikipediaCommunity portalRecent changesContact page Tools What links hereRelated changesUpload fileSpecial pagesPermanent linkPage informationWikidata itemCite this page Print/export Create a bookDownload as PDFPrintable version Languages العربيةБългарскиDeutschفارسی한국어ItalianoРусскийSimple Englishไทย中文
runtime error that may simply produce the wrong output or may cause a program to crash while running. Many different types of programming examples of logical consequences mistakes can cause logic errors. For example, assigning a value to the examples of logical appeals wrong variable may cause a series of unexpected program errors. Multiplying two numbers instead of adding them together may examples of logical reasoning also produce unwanted results. Even small typos that do not produce syntax errors may cause logic errors. In the PHP code example below, the if statement may cause a logic error https://en.wikipedia.org/wiki/Logic_error since the single equal sign (=) should be a double equal sign (==). Incorrect: if ($i=1) { ... } Correct: if ($i==1) { ... } In PHP, "==" means "is equal to," while "=" means "becomes." Therefore, the incorrect if statement always returns TRUE, since assigning 1 to the variable $i returns a TRUE value. In the correct code, the if statement only http://techterms.com/definition/logic_error returns TRUE if $i is equal to 1. However, since the syntax of the incorrect code is acceptable, it will not produce a syntax error and the code will compile successfully. The logic error might only be noticed during runtime. Because logic errors are often hidden in the source code, they are typically harder to find and debug than syntax errors. Updated: April 27, 2012 Cite this definition: APAMLAChicagoHTMLLink http://techterms.com/definition/logic_error TechTerms - The Tech Terms Computer Dictionary This page contains a technical definiton of Logic Error. It explains in computing terminology what Logic Error means and is one of many software terms in the TechTerms dictionary. All definitions on the TechTerms website are written to be technically accurate but also easy to understand. If you find this Logic Error definition to be helpful, you can reference it using the citation links above. If you think a term should be updated or added to the TechTerms dictionary, please email TechTerms! ‹ Log On | Logic Gate › Tech Factor 7 / 10 © 2016 Sharpened Productions | Terms of Use | Privacy Policy | About | Contact
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