{"id":19238,"date":"2024-04-15T05:36:48","date_gmt":"2024-04-15T05:36:48","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=19238"},"modified":"2024-04-15T05:36:48","modified_gmt":"2024-04-15T05:36:48","slug":"when-you-create-a-derived-class-and-instantiate-an-object-_____-a-the-parent-class-object-must-be-constructed-first-b-the-child-class-object-must-be-constructed-first-c-the-parent-class-object-must","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/when-you-create-a-derived-class-and-instantiate-an-object-_____-a-the-parent-class-object-must-be-constructed-first-b-the-child-class-object-must-be-constructed-first-c-the-parent-class-object-must\/","title":{"rendered":"When you create a derived class and instantiate an object _____ A. the parent class object must be constructed first B. the child class object must be constructed first C. the parent class object must not be constructed D. the child class object must not be constructed"},"content":{"rendered":"<p>\r\n    <!-- Check if it's an AMP page -->\r\n            <!-- Non-AMP version -->\r\n        <div class=\"mcq-container\" data-quiz-id=\"quizState_6abd7dbef0467\">\r\n                                            <div class=\"option\" data-option-key=\"option1\" data-is-correct=\"true\">\r\n                    the parent class object must be constructed first                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option2\" data-is-correct=\"false\">\r\n                    the child class object must be constructed first                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option3\" data-is-correct=\"false\">\r\n                    the parent class object must not be constructed                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option4\" data-is-correct=\"false\">\r\n                    the child class object must not be constructed                <\/div>\r\n                            \r\n            <!-- Feedback messages for non-AMP -->\r\n            <div class=\"feedback\" data-feedback=\"wrong\">Answer is Right!<\/div>\r\n            <div class=\"feedback\" data-feedback=\"right\">Answer is Wrong!<\/div>\r\n        <\/div>\r\n\r\n        <script>\r\n        document.addEventListener('DOMContentLoaded', function () {\r\n            var containers = document.querySelectorAll('.mcq-container');\r\n\r\n            containers.forEach(function(container) {\r\n                var options = container.querySelectorAll('.option');\r\n                var feedbackSelect = container.querySelector('[data-feedback=\"select\"]');\r\n                var feedbackWrong = container.querySelector('[data-feedback=\"wrong\"]');\r\n                var feedbackRight = container.querySelector('[data-feedback=\"right\"]');\r\n\r\n                options.forEach(function(option) {\r\n                    option.addEventListener('click', function() {\r\n                        var selectedOption = option.getAttribute('data-option-key');\r\n                        var isCorrect = option.getAttribute('data-is-correct') === 'true';\r\n\r\n                        \/\/ Remove previous selections\r\n                        options.forEach(function(opt) {\r\n                            opt.classList.remove('correct', 'incorrect');\r\n                        });\r\n\r\n                        \/\/ Add the correct\/incorrect class\r\n                        if (isCorrect) {\r\n                            option.classList.add('correct');\r\n                            feedbackRight.hidden = false;\r\n                            feedbackWrong.hidden = true;\r\n                        } else {\r\n                            option.classList.add('incorrect');\r\n                            feedbackRight.hidden = true;\r\n                            feedbackWrong.hidden = false;\r\n                        }\r\n\r\n                        \/\/ Hide select feedback\r\n                        feedbackSelect.hidden = true;\r\n                    });\r\n                });\r\n            });\r\n        });\r\n        <\/script>\r\n    \r\n    <!--more--><\/p>\n<p>The correct answer is: A. the parent class object must be constructed first.<\/p>\n<p>When you create a derived class and instantiate an object, the parent class object must be constructed first. This is because the derived class inherits from the parent class, and the parent class&#8217;s constructor must be called before the derived class&#8217;s constructor can be called.<\/p>\n<p>Here is an example:<\/p>\n<p>&#8220;`class Parent {<br \/>\npublic:<br \/>\nParent() {<br \/>\ncout &lt;&lt; &#8220;Parent::Parent()\\n&#8221;;<br \/>\n}<br \/>\n};<\/p>\n<p>class Child : public Parent {<br \/>\npublic:<br \/>\nChild() {<br \/>\ncout &lt;&lt; &#8220;Child::Child()\\n&#8221;;<br \/>\n}<br \/>\n};<\/p>\n<p>int main() {<br \/>\nChild c;<br \/>\nreturn 0;<br \/>\n}<br \/>\n&#8220;`<\/p>\n<p>When this code is compiled and run, the following output is produced:<\/p>\n<p><code>Parent::Parent()<br \/>\nChild::Child()<\/code><\/p>\n<p>As you <div class=\"youtube-subscribe-container\">\r\n        <a href=\"https:\/\/www.youtube.com\/channel\/UCNHT8lW-JmLC68rjBfZhdkg?sub_confirmation=1\" target=\"_blank\" class=\"youtube-subscribe-button\">\r\n            <span class=\"youtube-icon\">\r\n     <div class=\"telegram-channel-container\">\r\n        <a href=\"https:\/\/t.me\/pscnotes2025\" target=\"_blank\" class=\"telegram-channel-button\">\r\n            <span class=\"telegram-icon\">\r\n                <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 496 512\">\r\n                    <path fill=\"white\" d=\"M248,8C111,8,0,119,0,256s111,248,248,248s248-111,248-248S385,8,248,8z M362,177L320,367c-3,14-10,18-20,14l-56-41l-27,26 c-3,3-5,5-10,5l4-63L323,196c5-5-1-7-8-3l-98,62l-42-13c-9-3-10-9,2-14l162-63C351,160,365,164,362,177z\"\/>\r\n                <\/svg>\r\n            <\/span>\r\n            Join Our Telegram Channel\r\n        <\/a>\r\n    <\/div>            <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 576 512\">\r\n                    <path d=\"M549.7 124.1c-6.3-23.7-24.8-42.3-48.3-48.6C458.8 64 288 64 288 64S117.2 64 74.6 75.5c-23.5 6.3-42 24.9-48.3 48.6-11.4 42.9-11.4 132.3-11.4 132.3s0 89.4 11.4 132.3c6.3 23.7 24.8 41.5 48.3 47.8C117.2 448 288 448 288 448s170.8 0 213.4-11.5c23.5-6.3 42-24.2 48.3-47.8 11.4-42.9 11.4-132.3 11.4-132.3s0-89.4-11.4-132.3zm-317.5 213.5V175.2l142.7 81.2-142.7 81.2z\"\/>\r\n                <\/svg>\r\n            <\/span>\r\n            Subscribe on YouTube\r\n        <\/a>\r\n    <\/div> can see, the Parent class&#8217;s constructor is called first, followed by the Child class&#8217;s constructor. This is because the Child class inherits from the Parent class, and the Parent class&#8217;s constructor must be called before the derived class&#8217;s constructor can be called.<\/p>\n<p>I hope this explanation is helpful. Let me know if you have any other questions.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Join Our Telegram Channel Subscribe on YouTube<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[683],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.2 (Yoast SEO v23.3) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>When you create a derived class and instantiate an object _____ A. the parent class object must be constructed first B. the child class object must be constructed first C. the parent class object must not be constructed D. the child class object must not be constructed<\/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:\/\/exam.pscnotes.com\/mcq\/when-you-create-a-derived-class-and-instantiate-an-object-_____-a-the-parent-class-object-must-be-constructed-first-b-the-child-class-object-must-be-constructed-first-c-the-parent-class-object-must\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"When you create a derived class and instantiate an object _____ A. the parent class object must be constructed first B. the child class object must be constructed first C. the parent class object must not be constructed D. the child class object must not be constructed\" \/>\n<meta property=\"og:description\" content=\"Join Our Telegram Channel Subscribe on YouTube\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/when-you-create-a-derived-class-and-instantiate-an-object-_____-a-the-parent-class-object-must-be-constructed-first-b-the-child-class-object-must-be-constructed-first-c-the-parent-class-object-must\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2024-04-15T05:36:48+00:00\" \/>\n<meta name=\"author\" content=\"rawan239\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"rawan239\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"When you create a derived class and instantiate an object _____ A. the parent class object must be constructed first B. the child class object must be constructed first C. the parent class object must not be constructed D. the child class object must not be constructed","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/exam.pscnotes.com\/mcq\/when-you-create-a-derived-class-and-instantiate-an-object-_____-a-the-parent-class-object-must-be-constructed-first-b-the-child-class-object-must-be-constructed-first-c-the-parent-class-object-must\/","og_locale":"en_US","og_type":"article","og_title":"When you create a derived class and instantiate an object _____ A. the parent class object must be constructed first B. the child class object must be constructed first C. the parent class object must not be constructed D. the child class object must not be constructed","og_description":"Join Our Telegram Channel Subscribe on YouTube","og_url":"https:\/\/exam.pscnotes.com\/mcq\/when-you-create-a-derived-class-and-instantiate-an-object-_____-a-the-parent-class-object-must-be-constructed-first-b-the-child-class-object-must-be-constructed-first-c-the-parent-class-object-must\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2024-04-15T05:36:48+00:00","author":"rawan239","twitter_card":"summary_large_image","twitter_misc":{"Written by":"rawan239","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/exam.pscnotes.com\/mcq\/when-you-create-a-derived-class-and-instantiate-an-object-_____-a-the-parent-class-object-must-be-constructed-first-b-the-child-class-object-must-be-constructed-first-c-the-parent-class-object-must\/","url":"https:\/\/exam.pscnotes.com\/mcq\/when-you-create-a-derived-class-and-instantiate-an-object-_____-a-the-parent-class-object-must-be-constructed-first-b-the-child-class-object-must-be-constructed-first-c-the-parent-class-object-must\/","name":"When you create a derived class and instantiate an object _____ A. the parent class object must be constructed first B. the child class object must be constructed first C. the parent class object must not be constructed D. the child class object must not be constructed","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2024-04-15T05:36:48+00:00","dateModified":"2024-04-15T05:36:48+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"breadcrumb":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/when-you-create-a-derived-class-and-instantiate-an-object-_____-a-the-parent-class-object-must-be-constructed-first-b-the-child-class-object-must-be-constructed-first-c-the-parent-class-object-must\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/exam.pscnotes.com\/mcq\/when-you-create-a-derived-class-and-instantiate-an-object-_____-a-the-parent-class-object-must-be-constructed-first-b-the-child-class-object-must-be-constructed-first-c-the-parent-class-object-must\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/exam.pscnotes.com\/mcq\/when-you-create-a-derived-class-and-instantiate-an-object-_____-a-the-parent-class-object-must-be-constructed-first-b-the-child-class-object-must-be-constructed-first-c-the-parent-class-object-must\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/exam.pscnotes.com\/mcq\/"},{"@type":"ListItem","position":2,"name":"mcq","item":"https:\/\/exam.pscnotes.com\/mcq\/category\/mcq\/"},{"@type":"ListItem","position":3,"name":"Object oriented programming using c plus plus","item":"https:\/\/exam.pscnotes.com\/mcq\/category\/mcq\/object-oriented-programming-using-c-plus-plus\/"},{"@type":"ListItem","position":4,"name":"When you create a derived class and instantiate an object _____ A. the parent class object must be constructed first B. the child class object must be constructed first C. the parent class object must not be constructed D. the child class object must not be constructed"}]},{"@type":"WebSite","@id":"https:\/\/exam.pscnotes.com\/mcq\/#website","url":"https:\/\/exam.pscnotes.com\/mcq\/","name":"MCQ and Quiz for Exams","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/exam.pscnotes.com\/mcq\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209","name":"rawan239","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/d97f17072bfa490596c8f78363955d55?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/d97f17072bfa490596c8f78363955d55?s=96&d=mm&r=g","caption":"rawan239"},"sameAs":["https:\/\/exam.pscnotes.com"],"url":"https:\/\/exam.pscnotes.com\/mcq\/author\/rawan239\/"}]}},"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/19238"}],"collection":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/comments?post=19238"}],"version-history":[{"count":0,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/19238\/revisions"}],"wp:attachment":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/media?parent=19238"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/categories?post=19238"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/tags?post=19238"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}