{"id":6644,"date":"2026-04-13T11:50:53","date_gmt":"2026-04-13T11:50:53","guid":{"rendered":"http:\/\/the-codest.localhost\/dictionary\/reserved-word\/"},"modified":"2026-04-13T11:50:53","modified_gmt":"2026-04-13T11:50:53","slug":"varattu-sana","status":"publish","type":"dictionary","link":"https:\/\/thecodest.co\/fi\/dictionary\/reserved-word\/","title":{"rendered":"Varattu sana"},"content":{"rendered":"<h1>Varattu sana<\/h1>\n<p>Varattu sana tarkoittaa sanaa, jonka ohjelmointikieli on varannut tietty\u00e4 tarkoitusta varten ja jota ei voi k\u00e4ytt\u00e4\u00e4 muuttujana tai tunnisteena. N\u00e4it\u00e4 sanoja kutsutaan my\u00f6s avainsanoiksi. Varatut sanat ovat olennainen osa ohjelmointikielen syntaksia, ja niill\u00e4 on ennalta m\u00e4\u00e4ritelty merkitys, jota ohjelmoija ei voi muuttaa tai muokata.<\/p>\n<p>Varatut sanat ovat ohjelmointikielen k\u00e4ytt\u00e4mi\u00e4 sanoja, joilla yksil\u00f6id\u00e4\u00e4n tiettyj\u00e4 toimintoja, operaatioita tai <a href=\"https:\/\/thecodest.co\/fi\/blog\/app-data-collection-security-risks-value-and-types-explored\/\">tiedot<\/a> tyypit. Niit\u00e4 k\u00e4ytet\u00e4\u00e4n ohjelmointikielen rakenteen, k\u00e4ytt\u00e4ytymisen ja s\u00e4\u00e4nt\u00f6jen m\u00e4\u00e4rittelyyn. Varattuja sanoja k\u00e4ytet\u00e4\u00e4n usein lausekkeiden, funktioiden ja lausekkeiden luomiseen, joita k\u00e4ytet\u00e4\u00e4n tietojen k\u00e4sittelyyn ja operaatioiden suorittamiseen.<\/p>\n<p>Joitakin esimerkkej\u00e4 varatuista sanoista suosituissa <a href=\"https:\/\/thecodest.co\/fi\/blog\/top-programming-languages-to-build-e-commerce\/\">ohjelmointikielet<\/a> sis\u00e4lt\u00e4v\u00e4t:<\/p>\n<ul>\n<li><a href=\"https:\/\/thecodest.co\/fi\/blog\/find-the-right-java-developer-now\/\">Java<\/a>: public, static, void, class, interface, extends, implements, new, return, if, else, switch, case, break, default, while, do, for, try, catch, finally, throw, throws<\/li>\n<li><a href=\"https:\/\/thecodest.co\/fi\/blog\/hire-django-developers\/\">Python<\/a>: and, as, assert, break, class, continue, def, del, elif, else, except, False, finally, for, from, global, if, import, in, is, lambda, None, nonlocal, not, or, pass, raise, return, True, try, while, with, yield<\/li>\n<li>C++: auto, break, case, char, const, continue, default, do, double, else, enum, extern, float, for, goto, if, int, long, register, return, short, signed, sizeof, static, struct, switch, typedef, union, unsigned, void, volatile, while<\/li>\n<\/ul>\n<p>On t\u00e4rke\u00e4\u00e4 huomata, ett\u00e4 varattuja sanoja ei voi k\u00e4ytt\u00e4\u00e4 muuttujien nimin\u00e4 tai tunnisteina ohjelmassa. Jos varattua sanaa yritet\u00e4\u00e4n k\u00e4ytt\u00e4\u00e4 muuttujana tai tunnisteena, seurauksena on syntaksivirhe. Sen vuoksi on eritt\u00e4in t\u00e4rke\u00e4\u00e4 tuntea ohjelmointikielen varatut sanat ennen kuin kirjoitat ohjelmia. <a href=\"https:\/\/thecodest.co\/fi\/dictionary\/what-is-code-refactoring\/\">koodi<\/a>.<\/p>\n<p>Yhteenvetona voidaan todeta, ett\u00e4 varatut sanat ovat olennainen osa ohjelmointikieli\u00e4, jotka auttavat m\u00e4\u00e4rittelem\u00e4\u00e4n kielen syntaksin ja rakenteen. Niit\u00e4 k\u00e4ytet\u00e4\u00e4n tiettyjen toimintojen, operaatioiden tai tietotyyppien tunnistamiseen, eik\u00e4 niit\u00e4 voi k\u00e4ytt\u00e4\u00e4 muuttujien nimin\u00e4 tai tunnisteina. Varattujen sanojen ymm\u00e4rt\u00e4minen on ratkaisevan t\u00e4rke\u00e4\u00e4 virheett\u00f6m\u00e4n koodin kirjoittamisessa ja tehokkaiden ohjelmien kehitt\u00e4misess\u00e4.<\/p>","protected":false},"excerpt":{"rendered":"<p>Tutustu ohjelmointikielten varattuihin sanoihin - tiettyihin tarkoituksiin varattuihin sanoihin, joita ei voi k\u00e4ytt\u00e4\u00e4 muuttujina tai tunnisteina. #ohjelmointi #syntaksi<\/p>","protected":false},"template":"","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"class_list":["post-6644","dictionary","type-dictionary","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.3 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Reserved Word - The Codest<\/title>\n<meta name=\"description\" content=\"Learn about reserved words in programming languages - words set aside for specific purposes that cannot be used as variables or identifiers. #programming #syntax\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/thecodest.co\/fi\/sanakirja\/varattu-sana\/\" \/>\n<meta property=\"og:locale\" content=\"fi_FI\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Reserved Word\" \/>\n<meta property=\"og:description\" content=\"Learn about reserved words in programming languages - 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