{"id":19229,"date":"2024-04-15T05:36:42","date_gmt":"2024-04-15T05:36:42","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=19229"},"modified":"2024-04-15T05:36:42","modified_gmt":"2024-04-15T05:36:42","slug":"the-_____-mode-tells-c-to-open-a-file-for-input-a-addios-b-infile-c-iosapp-d-iosin-e-iosout","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/the-_____-mode-tells-c-to-open-a-file-for-input-a-addios-b-infile-c-iosapp-d-iosin-e-iosout\/","title":{"rendered":"The _____ mode tells C++ to open a file for input A. add::ios B. in::file C. ios::app D. ios::in E. ios::out"},"content":{"rendered":"<p>[amp_mcq option1=&#8221;add::ios&#8221; option2=&#8221;in::file&#8221; option3=&#8221;ios::app&#8221; option4=&#8221;ios::in E. ios::out&#8221; correct=&#8221;option4&#8243;]<!--more--><\/p>\n<p>The correct answer is: D. ios::in<\/p>\n<p>The ios::in mode tells C++ to open a file for input. This means that the program can read data from the file. The other options are incorrect because they do not tell C++ to open a file for input.<\/p>\n<ul>\n<li>add::ios is a macro that is used to define the type of an object. It is not used to open a file.<\/li>\n<li>in::file is a type of file that can be opened in C++. However, it is not the mode that tells C++ to open a file for input.<\/li>\n<li>ios::app is a mode that tells C++ to open a file for appending. This means that the program can write data to the end of the file.<\/li>\n<li>ios::out is a mode that tells C++ to open a file for output. This means that the program can write data to the file.<\/li>\n<\/ul>\n<p>Here is an example of how to open a file for input in C++:<\/p>\n<p>&#8220;`c++<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_69 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title \" >Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/exam.pscnotes.com\/mcq\/the-_____-mode-tells-c-to-open-a-file-for-input-a-addios-b-infile-c-iosapp-d-iosin-e-iosout\/#include\" title=\"include\">include<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/exam.pscnotes.com\/mcq\/the-_____-mode-tells-c-to-open-a-file-for-input-a-addios-b-infile-c-iosapp-d-iosin-e-iosout\/#include-2\" title=\"include\">include<\/a><\/li><\/ul><\/nav><\/div>\n<h1><span class=\"ez-toc-section\" id=\"include\"><\/span>include <iostream><span class=\"ez-toc-section-end\"><\/span><\/h1>\n<h1><span class=\"ez-toc-section\" id=\"include-2\"><\/span>include <fstream><span class=\"ez-toc-section-end\"><\/span><\/h1>\n<p>int main() {<br \/>\n  std::ifstream file(&#8220;input.txt&#8221;);<br \/>\n  if (file.is_open()) {<br \/>\n    std::string line;<br \/>\n    while (std::getline(file, line)) {<br \/>\n      std::cout &lt;&lt; line &lt;&lt; std::endl;<br \/>\n    }<br \/>\n    file.close();<br \/>\n  } else {<br \/>\n    std::cout &lt;&lt; &#8220;Error opening file.&#8221; &lt;&lt; std::endl;<br \/>\n  }<br \/>\n  return 0;<br \/>\n}<br \/>\n&#8220;`<\/p>\n<p>In this example, the file &#8220;input.txt&#8221; is opened for input. The program then reads each line from the file and prints it to the console. When the program reaches the end of the file, the file is closed.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>[amp_mcq option1=&#8221;add::ios&#8221; option2=&#8221;in::file&#8221; option3=&#8221;ios::app&#8221; option4=&#8221;ios::in E. ios::out&#8221; correct=&#8221;option4&#8243;]<\/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":[],"class_list":["post-19229","post","type-post","status-publish","format-standard","hentry","category-object-oriented-programming-using-c-plus-plus","no-featured-image-padding"],"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>The _____ mode tells C++ to open a file for input A. add::ios B. in::file C. ios::app D. ios::in E. ios::out<\/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\/the-_____-mode-tells-c-to-open-a-file-for-input-a-addios-b-infile-c-iosapp-d-iosin-e-iosout\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The _____ mode tells C++ to open a file for input A. add::ios B. in::file C. ios::app D. ios::in E. ios::out\" \/>\n<meta property=\"og:description\" content=\"[amp_mcq option1=&#8221;add::ios&#8221; option2=&#8221;in::file&#8221; option3=&#8221;ios::app&#8221; option4=&#8221;ios::in E. ios::out&#8221; correct=&#8221;option4&#8243;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/the-_____-mode-tells-c-to-open-a-file-for-input-a-addios-b-infile-c-iosapp-d-iosin-e-iosout\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2024-04-15T05:36:42+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":"The _____ mode tells C++ to open a file for input A. add::ios B. in::file C. ios::app D. ios::in E. ios::out","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\/the-_____-mode-tells-c-to-open-a-file-for-input-a-addios-b-infile-c-iosapp-d-iosin-e-iosout\/","og_locale":"en_US","og_type":"article","og_title":"The _____ mode tells C++ to open a file for input A. add::ios B. in::file C. ios::app D. ios::in E. ios::out","og_description":"[amp_mcq option1=&#8221;add::ios&#8221; option2=&#8221;in::file&#8221; option3=&#8221;ios::app&#8221; option4=&#8221;ios::in E. ios::out&#8221; correct=&#8221;option4&#8243;]","og_url":"https:\/\/exam.pscnotes.com\/mcq\/the-_____-mode-tells-c-to-open-a-file-for-input-a-addios-b-infile-c-iosapp-d-iosin-e-iosout\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2024-04-15T05:36:42+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\/the-_____-mode-tells-c-to-open-a-file-for-input-a-addios-b-infile-c-iosapp-d-iosin-e-iosout\/","url":"https:\/\/exam.pscnotes.com\/mcq\/the-_____-mode-tells-c-to-open-a-file-for-input-a-addios-b-infile-c-iosapp-d-iosin-e-iosout\/","name":"The _____ mode tells C++ to open a file for input A. add::ios B. in::file C. ios::app D. ios::in E. ios::out","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2024-04-15T05:36:42+00:00","dateModified":"2024-04-15T05:36:42+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"breadcrumb":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/the-_____-mode-tells-c-to-open-a-file-for-input-a-addios-b-infile-c-iosapp-d-iosin-e-iosout\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/exam.pscnotes.com\/mcq\/the-_____-mode-tells-c-to-open-a-file-for-input-a-addios-b-infile-c-iosapp-d-iosin-e-iosout\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/exam.pscnotes.com\/mcq\/the-_____-mode-tells-c-to-open-a-file-for-input-a-addios-b-infile-c-iosapp-d-iosin-e-iosout\/#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":"The _____ mode tells C++ to open a file for input A. add::ios B. in::file C. ios::app D. ios::in E. ios::out"}]},{"@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\/761a7274f9cce048fa5b921221e7934820d74514df93ef195a9d22af0c1c9001?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/761a7274f9cce048fa5b921221e7934820d74514df93ef195a9d22af0c1c9001?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\/19229","targetHints":{"allow":["GET"]}}],"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=19229"}],"version-history":[{"count":0,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/19229\/revisions"}],"wp:attachment":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/media?parent=19229"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/categories?post=19229"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/tags?post=19229"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}