{"id":19257,"date":"2024-04-15T05:37:03","date_gmt":"2024-04-15T05:37:03","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=19257"},"modified":"2024-04-15T05:37:03","modified_gmt":"2024-04-15T05:37:03","slug":"you-must-provide-a-constructor-for-a-derived-class-a-always-b-if-the-base-class-constructor-required-arguments-c-if-the-base-class-constructor-does-not-required-arguments-d-never","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/you-must-provide-a-constructor-for-a-derived-class-a-always-b-if-the-base-class-constructor-required-arguments-c-if-the-base-class-constructor-does-not-required-arguments-d-never\/","title":{"rendered":"You must provide a constructor for a derived class A. always B. if the base class constructor required arguments C. if the base class constructor does not required arguments D. never"},"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_6abe0ab8ea4ef\">\r\n                                            <div class=\"option\" data-option-key=\"option1\" data-is-correct=\"true\">\r\n                    always                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option2\" data-is-correct=\"false\">\r\n                    if the base class constructor required arguments                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option3\" data-is-correct=\"false\">\r\n                    if the base class constructor does not required arguments                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option4\" data-is-correct=\"false\">\r\n                    never                <\/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 = 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         });\r\n        });\r\n        <\/script>\r\n    \r\n    <!--more--><\/p>\n<p>The correct answer is: <strong>A. always<\/strong><\/p>\n<p>A constructor is a special type of method that is used to initialize an object of a class. <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                <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 <div class=\"telegram-channel-container\">\r\n        <a href=\"https:\/\/t.me\/pscnotes2025\" target=\"_blank\" class=\"telegram-channel-button\">\r\n            <span 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The constructor for a derived class must always be provided, even if the base class constructor does not require arguments. This is because the derived class constructor must call the base class constructor in order to initialize the base class members.<\/p>\n<p>If the base class constructor does not require arguments, then the derived class constructor can simply call the base class constructor without any arguments. However, if the base class constructor requires arguments, then the derived class constructor must provide arguments that match the arguments of the base class constructor.<\/p>\n<p>For example, consider the following code:<\/p>\n<p>&#8220;`class Base {<br \/>\npublic:<br \/>\nBase() {<br \/>\ncout &lt;&lt; &#8220;Base constructor called&#8221; &lt;&lt; endl;<br \/>\n}<br \/>\n};<\/p>\n<p>class Derived : public Base {<br \/>\npublic:<br \/>\nDerived(int x) {<br \/>\nBase::Base();<br \/>\ncout &lt;&lt; &#8220;Derived constructor called with argument &#8221; &lt;&lt; x &lt;&lt; endl;<br \/>\n}<br \/>\n};<\/p>\n<p>int main() {<br \/>\nDerived d(10);<br \/>\nreturn 0;<br \/>\n}<br \/>\n&#8220;`<\/p>\n<p>In this code, the <code>Derived<\/code> constructor calls the <code>Base<\/code> constructor with the argument <code>10<\/code>. This is because the <code>Base<\/code> constructor requires an argument, and the <code>Derived<\/code> constructor must provide an argument that matches the argument of the base class constructor.<\/p>\n<p>The output of this code is:<\/p>\n<p><code>Base constructor called<br \/>\nDerived constructor called with argument 10<\/code><\/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>You must provide a constructor for a derived class A. always B. if the base class constructor required arguments C. if the base class constructor does not required arguments D. never<\/title>\n<meta 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