{"id":9191,"date":"2022-09-17T16:37:21","date_gmt":"2022-09-17T11:07:21","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-createprocess-causing-problems\/"},"modified":"2022-09-17T16:37:21","modified_gmt":"2022-09-17T11:07:21","slug":"solved-createprocess-causing-problems","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-createprocess-causing-problems\/","title":{"rendered":"[Solved] CreateProcess causing problems"},"content":{"rendered":"<p> [ad_1]<br \/>\n<\/p>\n<div id=\"answer-55682255\" class=\"answer js-answer accepted-answer js-accepted-answer\" data-answerid=\"55682255\" data-parentid=\"55657299\" data-score=\"0\" 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>First, <code>fgets<\/code> will get a string with charactor &#8216;\\n&#8217; when size of inserted string &lt;(255-1). So, let&#8217;s set the <code>\\n<\/code> to <code>\\0<\/code>:<\/p>\n<pre><code>fgets(cmd, 255, stdin);\ncmd[strlen(cmd) - 1] = '\\0';\nCreateProcess(cmd, NULL, NULL, NULL, FALSE, 0, NULL, NULL, &amp;si, &amp;pi);\n<\/code><\/pre>\n<p>Second, <\/p>\n<blockquote>\n<p>more instances of cmd to popup in the command line.<\/p>\n<\/blockquote>\n<p>If what you mean is like:<\/p>\n<p><a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/jassweb.com\/solved\/wp-content\/uploads\/2022\/09\/Solved-CreateProcess-causing-problems.png\"><img decoding=\"async\" src=\"https:\/\/jassweb.com\/solved\/wp-content\/uploads\/2022\/09\/Solved-CreateProcess-causing-problems.png\" alt=\"enter image description here\"><\/a><\/p>\n<p>This is because the input focus of the cmd process and the current process alternately appears in the same console, not always creating a new instance.<\/p>\n<p>If you <code>CreateProcess<\/code> with <code>CREATE_NEW_CONSOLE<\/code>:<\/p>\n<pre><code>CreateProcess(cmd, NULL, NULL, NULL, FALSE, CREATE_NEW_CONSOLE, NULL, NULL, &amp;si, &amp;pi);\n<\/code><\/pre>\n<p>You will see that only a new cmd console has been created.<br \/>\n<a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/jassweb.com\/solved\/wp-content\/uploads\/2022\/09\/1663412841_333_Solved-CreateProcess-causing-problems.png\"><img decoding=\"async\" src=\"https:\/\/jassweb.com\/solved\/wp-content\/uploads\/2022\/09\/1663412841_333_Solved-CreateProcess-causing-problems.png\" alt=\"enter image description here\"><\/a><\/p>\n<\/p><\/div>\n<div class=\"mt24\"><\/div>\n<\/div>\n<p>            <span class=\"d-none\" itemprop=\"commentCount\"><\/span> <\/p><\/div>\n<\/div>\n<p>[ad_2]<\/p>\n<p>solved CreateProcess causing problems <\/p>\n","protected":false},"excerpt":{"rendered":"<p>[ad_1] First, fgets will get a string with charactor &#8216;\\n&#8217; when size of inserted string &lt;(255-1). So, let&#8217;s set the \\n to \\0: fgets(cmd, 255, stdin); cmd[strlen(cmd) &#8211; 1] = &#8216;\\0&#8217;; CreateProcess(cmd, NULL, NULL, NULL, FALSE, 0, NULL, NULL, &amp;si, &amp;pi); Second, more instances of cmd to popup in the command line. If what you &#8230; <a title=\"[Solved] CreateProcess causing problems\" class=\"read-more\" href=\"https:\/\/jassweb.com\/solved\/solved-createprocess-causing-problems\/\" aria-label=\"More on [Solved] CreateProcess causing problems\">Read more<\/a><\/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":[324,683],"class_list":["post-9191","post","type-post","status-publish","format-standard","hentry","category-solved","tag-c","tag-winapi"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>[Solved] CreateProcess causing problems - 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-createprocess-causing-problems\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] CreateProcess causing problems - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] First, fgets will get a string with charactor &#8216;n&#8217; when size of inserted string &lt;(255-1). So, let&#8217;s set the n to : fgets(cmd, 255, stdin); cmd[strlen(cmd) - 1] = &#039;&#039;; CreateProcess(cmd, NULL, NULL, NULL, FALSE, 0, NULL, NULL, &amp;si, &amp;pi); Second, more instances of cmd to popup in the command line. If what you ... Read more\" \/>\n<meta property=\"og:url\" content=\"https:\/\/jassweb.com\/solved\/solved-createprocess-causing-problems\/\" \/>\n<meta property=\"og:site_name\" content=\"JassWeb\" \/>\n<meta property=\"article:published_time\" content=\"2022-09-17T11:07:21+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/jassweb.com\/solved\/wp-content\/uploads\/2022\/09\/Solved-CreateProcess-causing-problems.png\" \/>\n<meta name=\"author\" content=\"Kirat\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Kirat\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/jassweb.com\/solved\/solved-createprocess-causing-problems\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/jassweb.com\/solved\/solved-createprocess-causing-problems\/\"},\"author\":{\"name\":\"Kirat\",\"@id\":\"https:\/\/jassweb.com\/solved\/#\/schema\/person\/65c9c7b7958150c0dc8371fa35dd7c31\"},\"headline\":\"[Solved] CreateProcess causing problems\",\"datePublished\":\"2022-09-17T11:07:21+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/jassweb.com\/solved\/solved-createprocess-causing-problems\/\"},\"wordCount\":89,\"publisher\":{\"@id\":\"https:\/\/jassweb.com\/solved\/#organization\"},\"image\":{\"@id\":\"https:\/\/jassweb.com\/solved\/solved-createprocess-causing-problems\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/jassweb.com\/solved\/wp-content\/uploads\/2022\/09\/Solved-CreateProcess-causing-problems.png\",\"keywords\":[\"c++\",\"winapi\"],\"articleSection\":[\"Solved\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/jassweb.com\/solved\/solved-createprocess-causing-problems\/\",\"url\":\"https:\/\/jassweb.com\/solved\/solved-createprocess-causing-problems\/\",\"name\":\"[Solved] CreateProcess causing problems - 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So, let&#8217;s set the n to : fgets(cmd, 255, stdin); cmd[strlen(cmd) - 1] = ''; CreateProcess(cmd, NULL, NULL, NULL, FALSE, 0, NULL, NULL, &amp;si, &amp;pi); Second, more instances of cmd to popup in the command line. If what you ... 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