{"id":32997,"date":"2023-02-03T14:38:19","date_gmt":"2023-02-03T09:08:19","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-c-cannot-instantiate-abstract-class\/"},"modified":"2023-02-03T14:38:19","modified_gmt":"2023-02-03T09:08:19","slug":"solved-c-cannot-instantiate-abstract-class","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-c-cannot-instantiate-abstract-class\/","title":{"rendered":"[Solved] C++ cannot instantiate abstract class"},"content":{"rendered":"<p> [ad_1]<br \/>\n<\/p>\n<div id=\"answer-37404731\" class=\"answer js-answer accepted-answer js-accepted-answer\" data-answerid=\"37404731\" data-parentid=\"37404610\" data-score=\"2\" data-position-on-page=\"1\" data-highest-scored=\"1\" data-question-has-accepted-highest-score=\"1\" itemprop=\"acceptedAnswer\" itemscope itemtype=\"https:\/\/schema.org\/Answer\">\n<div class=\"post-layout\">\n<div class=\"votecell post-layout--left\"><\/div>\n<div class=\"answercell post-layout--right\">\n<div class=\"s-prose js-post-body\" itemprop=\"text\">\n<p><code>getPosition<\/code> is non-const in the interface class, but const in your derived class.  These are two different functions and cause your problem.<\/p>\n<p>Adding the <code>override<\/code> keyword in the implementation class (if your compiler supports it) will flag this sort of problem.<\/p>\n<\/p><\/div>\n<div class=\"mt24\"><\/div>\n<\/div>\n<p>            <span class=\"d-none\" itemprop=\"commentCount\">0<\/span> <\/p><\/div>\n<\/div>\n<p>[ad_2]<\/p>\n<p>solved C++ cannot instantiate abstract class <\/p>\n","protected":false},"excerpt":{"rendered":"<p>[ad_1] getPosition is non-const in the interface class, but const in your derived class. These are two different functions and cause your problem. Adding the override keyword in the implementation class (if your compiler supports it) will flag this sort of problem. 0 [ad_2] solved C++ cannot instantiate abstract class<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[324,2440],"class_list":["post-32997","post","type-post","status-publish","format-standard","hentry","category-solved","tag-c","tag-queue"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>[Solved] C++ cannot instantiate abstract class - JassWeb<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jassweb.com\/solved\/solved-c-cannot-instantiate-abstract-class\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] C++ cannot instantiate abstract class - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] getPosition is non-const in the interface class, but const in your derived class. 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