{"id":33261,"date":"2023-02-05T23:35:26","date_gmt":"2023-02-05T18:05:26","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-strncmp-dont-work-as-it-should\/"},"modified":"2023-02-05T23:35:26","modified_gmt":"2023-02-05T18:05:26","slug":"solved-strncmp-dont-work-as-it-should","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-strncmp-dont-work-as-it-should\/","title":{"rendered":"[Solved] strncmp don&#8217;t work as it should"},"content":{"rendered":"<p> [ad_1]<br \/>\n<\/p>\n<div id=\"answer-22658245\" class=\"answer js-answer accepted-answer js-accepted-answer\" data-answerid=\"22658245\" data-parentid=\"22658152\" data-score=\"1\" 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>strcmp<\/code> &amp; <code>strncmp<\/code> functions return <code>0<\/code> if strings are equal. You should do:<\/p>\n<pre><code>if (strncmp(frase1, frase3, 4) == 0) ...\n<\/code><\/pre>\n<p>i.e.:<\/p>\n<pre><code>char *str1 = \"Example 1\";\nchar *str2 = \"Example 2\";\nchar *str3 = \"Some string\";\nchar *str4 = \"Example 1\";\n\nif (strncmp(str1, str2, 7) == 0) printf(\"YES\\n\");  \/\/ \"Example\" &lt;-&gt; \"Example\"\nelse printf(\"NO\\n\");\n\nif (strncmp(str1, str3, 2) == 0) printf(\"YES\\n\");  \/\/ \"Ex\" &lt;-&gt; \"So\"\nelse printf(\"NO\\n\");\n\nif (strcmp(str1, str4) == 0) printf(\"YES\\n\");      \/\/ \"Example 1\" &lt;-&gt; \"Example 2\"\nelse printf(\"NO\\n\");\n<\/code><\/pre>\n<p>yields <code>YES<\/code>, <code>NO<\/code>, <code>YES<\/code>.<\/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 strncmp don&#8217;t work as it should <\/p>\n","protected":false},"excerpt":{"rendered":"<p>[ad_1] strcmp &amp; strncmp functions return 0 if strings are equal. You should do: if (strncmp(frase1, frase3, 4) == 0) &#8230; i.e.: char *str1 = &#8220;Example 1&#8221;; char *str2 = &#8220;Example 2&#8221;; char *str3 = &#8220;Some string&#8221;; char *str4 = &#8220;Example 1&#8221;; if (strncmp(str1, str2, 7) == 0) printf(&#8220;YES\\n&#8221;); \/\/ &#8220;Example&#8221; &lt;-&gt; &#8220;Example&#8221; else printf(&#8220;NO\\n&#8221;); &#8230; <a title=\"[Solved] strncmp don&#8217;t work as it should\" class=\"read-more\" href=\"https:\/\/jassweb.com\/solved\/solved-strncmp-dont-work-as-it-should\/\" aria-label=\"More on [Solved] strncmp don&#8217;t work as it should\">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":[324,947,1738,362,2556],"class_list":["post-33261","post","type-post","status-publish","format-standard","hentry","category-solved","tag-c","tag-comparison","tag-strcmp","tag-string","tag-string-comparison"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>[Solved] strncmp don&#039;t work as it should - 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-strncmp-dont-work-as-it-should\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] strncmp don&#039;t work as it should - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] strcmp &amp; strncmp functions return 0 if strings are equal. You should do: if (strncmp(frase1, frase3, 4) == 0) ... i.e.: char *str1 = &quot;Example 1&quot;; char *str2 = &quot;Example 2&quot;; char *str3 = &quot;Some string&quot;; char *str4 = &quot;Example 1&quot;; if (strncmp(str1, str2, 7) == 0) printf(&quot;YESn&quot;); \/\/ &quot;Example&quot; &lt;-&gt; &quot;Example&quot; else printf(&quot;NOn&quot;); ... 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You should do: if (strncmp(frase1, frase3, 4) == 0) ... i.e.: char *str1 = \"Example 1\"; char *str2 = \"Example 2\"; char *str3 = \"Some string\"; char *str4 = \"Example 1\"; if (strncmp(str1, str2, 7) == 0) printf(\"YESn\"); \/\/ \"Example\" &lt;-&gt; \"Example\" else printf(\"NOn\"); ... 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