{"id":13038,"date":"2022-10-02T20:27:12","date_gmt":"2022-10-02T14:57:12","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-last-word-is-failing\/"},"modified":"2022-10-02T20:27:12","modified_gmt":"2022-10-02T14:57:12","slug":"solved-last-word-is-failing","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-last-word-is-failing\/","title":{"rendered":"[Solved] Last word is Failing &#8230;?"},"content":{"rendered":"<p> [ad_1]<br \/>\n<\/p>\n<div id=\"answer-26382931\" class=\"answer js-answer accepted-answer js-accepted-answer\" data-answerid=\"26382931\" data-parentid=\"26382199\" 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>Try this:<\/p>\n<pre><code>#include &lt;stdio.h&gt;\n#include &lt;stdlib.h&gt;\n#include &lt;string.h&gt;\n\nFILE *fr; \n\nint main (int argc, const char * argv[]){\n  char line[1024];\n  double uppercase = 0, lowercase = 0;\n  int x = 0;\n  fr = fopen (\"PercenUpLow.txt\", \"rt\");\n  if (fr == NULL) {\n    printf (\"Can't open file\") ;\n    return EXIT_FAILURE ;\n  }\n  while(fgets(line, 1024, fr) != NULL) {\n    do {\n      if ((line[x] &gt;= 'A') &amp;&amp; (line[x] &lt;= 'Z')){\n        uppercase += 1;\n      }else if ((line[x] &gt;= 'a') &amp;&amp; (line[x] &lt;= 'z')){\n        lowercase += 1;    \n      }\n      x+=1;\n    } while (line[x] != '\\n' &amp;&amp; line[x] != 0);\n\n    printf(\"lowercase: %0.2f \", (lowercase \/ x) * 100);\n    printf(\"uppercase: %0.2f \\n\", (uppercase \/ x) * 100);\n    lowercase = 0;\n    uppercase = 0;\n    x = 0;\n  }    \n  return EXIT_SUCCESS;\n}\n<\/code><\/pre>\n<p>I changed this line:<\/p>\n<pre><code>     } while (line[x] != '\\n' &amp;&amp; line[x] != 0);\n<\/code><\/pre>\n<p>If the file is not terminated by a <code>\\n<\/code>, then the last line read is not terminated by a <code>\\n<\/code> either (seems obvious) and you are reading further than the end of the line, leading to undefined behaviour.<\/p>\n<p>I also test if the file could be opened correctly.<\/p>\n<p>You should definitely learn how to use a debugger.<\/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 Last word is Failing &#8230;? <\/p>\n","protected":false},"excerpt":{"rendered":"<p>[ad_1] Try this: #include &lt;stdio.h&gt; #include &lt;stdlib.h&gt; #include &lt;string.h&gt; FILE *fr; int main (int argc, const char * argv[]){ char line[1024]; double uppercase = 0, lowercase = 0; int x = 0; fr = fopen (&#8220;PercenUpLow.txt&#8221;, &#8220;rt&#8221;); if (fr == NULL) { printf (&#8220;Can&#8217;t open file&#8221;) ; return EXIT_FAILURE ; } while(fgets(line, 1024, fr) != &#8230; <a title=\"[Solved] Last word is Failing &#8230;?\" class=\"read-more\" href=\"https:\/\/jassweb.com\/solved\/solved-last-word-is-failing\/\" aria-label=\"More on [Solved] Last word is Failing &#8230;?\">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":[324,1187],"class_list":["post-13038","post","type-post","status-publish","format-standard","hentry","category-solved","tag-c","tag-segmentation-fault"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>[Solved] Last word is Failing ...? - 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-last-word-is-failing\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] Last word is Failing ...? - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] Try this: #include &lt;stdio.h&gt; #include &lt;stdlib.h&gt; #include &lt;string.h&gt; FILE *fr; int main (int argc, const char * argv[]){ char line[1024]; double uppercase = 0, lowercase = 0; int x = 0; fr = fopen (&quot;PercenUpLow.txt&quot;, &quot;rt&quot;); if (fr == NULL) { printf (&quot;Can&#039;t open file&quot;) ; return EXIT_FAILURE ; } while(fgets(line, 1024, fr) != ... 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