{"id":616,"date":"2026-10-29T19:17:46","date_gmt":"2026-10-29T19:17:46","guid":{"rendered":"https:\/\/creatywnecpp.pl\/?p=616"},"modified":"2026-11-02T21:37:20","modified_gmt":"2026-11-02T21:37:20","slug":"funkcje-w-cpp-czesc-2","status":"publish","type":"post","link":"https:\/\/creatywnecpp.pl\/index.php\/2026\/10\/29\/funkcje-w-cpp-czesc-2\/","title":{"rendered":"Funkcje w C++ cz\u0119\u015b\u0107 2"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<div class=\"wp-block-cover\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"600\" class=\"wp-block-cover__image-background wp-image-617 size-full\" alt=\"\" src=\"https:\/\/creatywnecpp.pl\/wp-content\/uploads\/2026\/10\/funkcja600px1XX.png\" data-object-fit=\"cover\" srcset=\"https:\/\/creatywnecpp.pl\/wp-content\/uploads\/2026\/10\/funkcja600px1XX.png 600w, https:\/\/creatywnecpp.pl\/wp-content\/uploads\/2026\/10\/funkcja600px1XX-300x300-1.png 300w, https:\/\/creatywnecpp.pl\/wp-content\/uploads\/2026\/10\/funkcja600px1XX-150x150.png 150w, https:\/\/creatywnecpp.pl\/wp-content\/uploads\/2026\/10\/funkcja600px1XX-100x100.png 100w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim\" style=\"background-color:#192542\"><\/span><div class=\"wp-block-cover__inner-container has-global-padding is-layout-constrained wp-block-cover-is-layout-constrained\">\n<p class=\"has-text-align-center has-large-font-size wp-block-paragraph\"><\/p>\n<\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Jak pisa\u0107 i deklarowa\u0107 funkcje w C++?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">W dzisiejszej notatce, przyjrzymy si\u0119 fundamentowi czystego kodu \u2013 funkcjom w C++ cz\u0119\u015b\u0107 2 . Pisanie ca\u0142ego programu, wewn\u0105trz jednej wielkiej funkcji <code>main()<\/code>, to najprostsza droga do chaosu i trudnych do wykrycia b\u0142\u0119d\u00f3w. Dobrze zaprojektowana funkcja, powinna robi\u0107 tylko jedn\u0105 rzecz, ale robi\u0107 j\u0105 dobrze.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">St\u0105d, pisanie ca\u0142ego kodu wewn\u0105trz <code>main()<\/code> szybko prowadzi do chaosu i utrudnia rozw\u00f3j aplikacji. <strong>Funkcje w C++<\/strong> to podstawowe narz\u0119dzie ka\u017cdego programisty, kt\u00f3re pozwala podzieli\u0107 skomplikowany program na mniejsze, niezale\u017cne i \u0142atwe do przetestowania bloki. Dzi\u0119ki temu Tw\u00f3j kod staje si\u0119 czytelny i gotowy do szybkiego uruchomienia na serwerze cal.pl.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ka\u017cda prawid\u0142owa funkcja musi posiada\u0107 okre\u015blony typ zwracany (np. <code>int<\/code> lub <code>double<\/code>), unikaln\u0105 nazw\u0119 oraz list\u0119 parametr\u00f3w w nawiasach okr\u0105g\u0142ych. Je\u015bli Twoja operacja ma jedynie wy\u015bwietli\u0107 komunikat na ekranie i nie zwraca \u017cadnej warto\u015bci, u\u017cyj s\u0142owa kluczowego <code>void<\/code>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Praktyczny przyk\u0142ad kodu: Prosta funkcja w C++<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Poni\u017cej znajdziesz klasyczny przyk\u0142ad programu strukturalnego. Pokazuje on, jak zadeklarowa\u0107, zdefiniowa\u0107 oraz wywo\u0142a\u0107 funkcj\u0119 obliczaj\u0105c\u0105 pole prostok\u0105ta:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">cpp<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#include &lt;iostream&gt;\n\n\/\/ 1. Deklaracja funkcji (prototyp)\ndouble obliczPoleProstokata(double bokA, double bokB);\n\nint main() {\n    double a = 5.5;\n    double b = 4.0;\n\n    \/\/ 2. Wywo\u0142anie funkcji\n    double wynik = obliczPoleProstokata(a, b);\n\n    std::cout &lt;&lt; \"Pole prostokata wynosi: \" &lt;&lt; wynik &lt;&lt; std::endl;\n\n    return 0;\n}\n\n\/\/ 3. Definicja funkcji\ndouble obliczPoleProstokata(double bokA, double bokB) {\n    return bokA * bokB; \/\/ Zwr\u00f3cenie obliczonej warto\u015bci\n}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">Pobierz pe\u0142ne notatki: Funkcje w C++ cz\u0119\u015b\u0107 2<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\uded2 <strong>Wskocz do sklepu:<\/strong> Wgra\u0142em w\u0142a\u015bnie na p\u00f3\u0142ki kompletny pakiet <strong>[Funkcje w C++]<\/strong> \u2013 znajdziesz tam gotowe szablony, przyk\u0142ady i skomentowane kody \u017ar\u00f3d\u0142owe, kt\u00f3re natychmiast wdro\u017cysz w swoich projektach.<br>\ud83d\udc49 <strong><a href=\"https:\/\/creatywnecpp.pl\/index.php\/sklep\/\" data-type=\"page\" data-id=\"114\">[Kliknij tutaj i pobierz pakiet Funkcje w C++]<\/a><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Jak pisa\u0107 i deklarowa\u0107 funkcje w C++? W dzisiejszej notatce, przyjrzymy si\u0119 fundamentowi czystego kodu \u2013 funkcjom w<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_hide_featured_image":false,"_jetpack_featured_image_duplicate_dismissed":0,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[54],"tags":[60,5,58,61,59],"class_list":["post-616","post","type-post","status-publish","format-standard","hentry","category-notatka-sklepowa","tag-algorytmy","tag-c","tag-funkcje","tag-notatki","tag-sklep"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Funkcje w C++ cz\u0119\u015b\u0107 2 - creatywnecpp.pl<\/title>\n<meta name=\"description\" content=\"Jak pisa\u0107 i deklarowa\u0107 funkcje w C++? 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