{"id":9463,"date":"2022-09-19T01:55:36","date_gmt":"2022-09-18T20:25:36","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-c-reading-specific-strings-with-quotes-from-a-file\/"},"modified":"2022-09-19T01:55:36","modified_gmt":"2022-09-18T20:25:36","slug":"solved-c-reading-specific-strings-with-quotes-from-a-file","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-c-reading-specific-strings-with-quotes-from-a-file\/","title":{"rendered":"[Solved] C- Reading specific strings with quotes from a file"},"content":{"rendered":"<p> [ad_1]<br \/>\n<\/p>\n<div id=\"answer-43800153\" class=\"answer js-answer accepted-answer js-accepted-answer\" data-answerid=\"43800153\" data-parentid=\"43799188\" 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>This should do the trick:<\/p>\n<pre><code>#include &lt;stdio.h&gt;\n#include &lt;string.h&gt;\n\nint extract_line (char* line, char* buffer, char* ctag)\n{\n  char line_buffer[255] = {0};\n  char* tagStart;\n  char* tagEnd;\n\n  if( strlen(line) &lt; (sizeof(line_buffer)\/sizeof(char)) )\n  {\n     strcpy(line_buffer,line);\n  }\n  else\n  {\n     printf(\"Line size is too big.\\n\");\n     return 1;\n  }\n\n  tagStart = strstr(line_buffer,ctag);\n  if(tagStart != NULL)\n  {\n    tagEnd = strstr(tagStart+1,ctag);\n    if(tagEnd != NULL &amp;&amp; (tagEnd &gt; (tagStart + strlen(ctag))))\n    {\n        *(tagEnd) = '\\0';\n        strcpy(buffer, tagStart + strlen(ctag));\n        printf(\"%s\\n\",buffer);\n    }\n    else\n    {\n      printf(\"Could not find closing tag.\\n\");\n      return 1; \n    }\n  }\n  return 0;\n}\n\n\nint main ()\n{\n  char buffer[255] = {0};\n  char line_buffer[255] = {0};\n  char tag[] = \"&lt;2a&gt;\";\n\n  char* cptr;\n  FILE* data;\n  data = fopen (\"file.txt\", \"r\");\n  if (data == NULL)\n  {\n       printf(\"\\n Failed to open file!\");\n  }\n  else {\n     while(( fgets( line_buffer, 255, data )) != NULL)\n     {        \n        cptr = strstr(line_buffer,tag);\n        if(cptr == NULL)\n        {\n            continue;\n        }\n        if(!extract_line(line_buffer,buffer,tag))\n        {\n           \/\/Do the rest of processing\n           puts(buffer);\n           strcpy(buffer,\"\");\n        }\n     }\n     fclose (data);\n  }\n  return 0;\n}\n<\/code><\/pre>\n<p><strike>Basicly, what you need to do is get the tag field and use it as a delimeter to exctract the token.<\/strike> Just get the line tag and then use it to exctract the data.<\/p>\n<\/p><\/div>\n<div class=\"mt24\"><\/div>\n<\/div>\n<p>            <span class=\"d-none\" itemprop=\"commentCount\">7<\/span> <\/p><\/div>\n<\/div>\n<p>[ad_2]<\/p>\n<p>solved C- Reading specific strings with quotes from a file <\/p>\n","protected":false},"excerpt":{"rendered":"<p>[ad_1] This should do the trick: #include &lt;stdio.h&gt; #include &lt;string.h&gt; int extract_line (char* line, char* buffer, char* ctag) { char line_buffer[255] = {0}; char* tagStart; char* tagEnd; if( strlen(line) &lt; (sizeof(line_buffer)\/sizeof(char)) ) { strcpy(line_buffer,line); } else { printf(&#8220;Line size is too big.\\n&#8221;); return 1; } tagStart = strstr(line_buffer,ctag); if(tagStart != NULL) { tagEnd = strstr(tagStart+1,ctag); &#8230; <a title=\"[Solved] C- Reading specific strings with quotes from a file\" class=\"read-more\" href=\"https:\/\/jassweb.com\/solved\/solved-c-reading-specific-strings-with-quotes-from-a-file\/\" aria-label=\"More on [Solved] C- Reading specific strings with quotes from a file\">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":[324,493],"class_list":["post-9463","post","type-post","status-publish","format-standard","hentry","category-solved","tag-c","tag-file"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>[Solved] C- Reading specific strings with quotes from a file - 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-c-reading-specific-strings-with-quotes-from-a-file\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] C- Reading specific strings with quotes from a file - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] This should do the trick: #include &lt;stdio.h&gt; #include &lt;string.h&gt; int extract_line (char* line, char* buffer, char* ctag) { char line_buffer[255] = {0}; char* tagStart; char* tagEnd; if( strlen(line) &lt; (sizeof(line_buffer)\/sizeof(char)) ) { strcpy(line_buffer,line); } else { printf(&quot;Line size is too big.n&quot;); return 1; } tagStart = strstr(line_buffer,ctag); if(tagStart != NULL) { tagEnd = strstr(tagStart+1,ctag); ... Read more\" \/>\n<meta property=\"og:url\" content=\"https:\/\/jassweb.com\/solved\/solved-c-reading-specific-strings-with-quotes-from-a-file\/\" \/>\n<meta property=\"og:site_name\" content=\"JassWeb\" \/>\n<meta property=\"article:published_time\" content=\"2022-09-18T20:25:36+00:00\" \/>\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-c-reading-specific-strings-with-quotes-from-a-file\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/jassweb.com\\\/solved\\\/solved-c-reading-specific-strings-with-quotes-from-a-file\\\/\"},\"author\":{\"name\":\"Kirat\",\"@id\":\"https:\\\/\\\/jassweb.com\\\/solved\\\/#\\\/schema\\\/person\\\/65c9c7b7958150c0dc8371fa35dd7c31\"},\"headline\":\"[Solved] C- Reading specific strings with quotes from a file\",\"datePublished\":\"2022-09-18T20:25:36+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/jassweb.com\\\/solved\\\/solved-c-reading-specific-strings-with-quotes-from-a-file\\\/\"},\"wordCount\":61,\"publisher\":{\"@id\":\"https:\\\/\\\/jassweb.com\\\/solved\\\/#organization\"},\"keywords\":[\"c++\",\"file\"],\"articleSection\":[\"Solved\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/jassweb.com\\\/solved\\\/solved-c-reading-specific-strings-with-quotes-from-a-file\\\/\",\"url\":\"https:\\\/\\\/jassweb.com\\\/solved\\\/solved-c-reading-specific-strings-with-quotes-from-a-file\\\/\",\"name\":\"[Solved] C- Reading specific strings with quotes from a file - JassWeb\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/jassweb.com\\\/solved\\\/#website\"},\"datePublished\":\"2022-09-18T20:25:36+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/jassweb.com\\\/solved\\\/solved-c-reading-specific-strings-with-quotes-from-a-file\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/jassweb.com\\\/solved\\\/solved-c-reading-specific-strings-with-quotes-from-a-file\\\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/jassweb.com\\\/solved\\\/solved-c-reading-specific-strings-with-quotes-from-a-file\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/jassweb.com\\\/solved\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"[Solved] C- Reading specific strings with quotes from a file\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/jassweb.com\\\/solved\\\/#website\",\"url\":\"https:\\\/\\\/jassweb.com\\\/solved\\\/\",\"name\":\"JassWeb\",\"description\":\"Build High-quality Websites\",\"publisher\":{\"@id\":\"https:\\\/\\\/jassweb.com\\\/solved\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/jassweb.com\\\/solved\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/jassweb.com\\\/solved\\\/#organization\",\"name\":\"Jass Web\",\"url\":\"https:\\\/\\\/jassweb.com\\\/solved\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/jassweb.com\\\/solved\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/jassweb.com\\\/wp-content\\\/uploads\\\/2021\\\/02\\\/jass-website-logo-1.png\",\"contentUrl\":\"https:\\\/\\\/jassweb.com\\\/wp-content\\\/uploads\\\/2021\\\/02\\\/jass-website-logo-1.png\",\"width\":693,\"height\":132,\"caption\":\"Jass Web\"},\"image\":{\"@id\":\"https:\\\/\\\/jassweb.com\\\/solved\\\/#\\\/schema\\\/logo\\\/image\\\/\"}},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/jassweb.com\\\/solved\\\/#\\\/schema\\\/person\\\/65c9c7b7958150c0dc8371fa35dd7c31\",\"name\":\"Kirat\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/jassweb.com\\\/solved\\\/wp-content\\\/litespeed\\\/avatar\\\/1261af3c9451399fa1336d28b98ea3bb.jpg?ver=1776403586\",\"url\":\"https:\\\/\\\/jassweb.com\\\/solved\\\/wp-content\\\/litespeed\\\/avatar\\\/1261af3c9451399fa1336d28b98ea3bb.jpg?ver=1776403586\",\"contentUrl\":\"https:\\\/\\\/jassweb.com\\\/solved\\\/wp-content\\\/litespeed\\\/avatar\\\/1261af3c9451399fa1336d28b98ea3bb.jpg?ver=1776403586\",\"caption\":\"Kirat\"},\"sameAs\":[\"http:\\\/\\\/jassweb.com\"],\"url\":\"https:\\\/\\\/jassweb.com\\\/solved\\\/author\\\/jaspritsinghghumangmail-com\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"[Solved] C- Reading specific strings with quotes from a file - JassWeb","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:\/\/jassweb.com\/solved\/solved-c-reading-specific-strings-with-quotes-from-a-file\/","og_locale":"en_US","og_type":"article","og_title":"[Solved] C- Reading specific strings with quotes from a file - JassWeb","og_description":"[ad_1] This should do the trick: #include &lt;stdio.h&gt; #include &lt;string.h&gt; int extract_line (char* line, char* buffer, char* ctag) { char line_buffer[255] = {0}; char* tagStart; char* tagEnd; if( strlen(line) &lt; (sizeof(line_buffer)\/sizeof(char)) ) { strcpy(line_buffer,line); } else { printf(\"Line size is too big.n\"); return 1; } tagStart = strstr(line_buffer,ctag); if(tagStart != NULL) { tagEnd = strstr(tagStart+1,ctag); ... Read more","og_url":"https:\/\/jassweb.com\/solved\/solved-c-reading-specific-strings-with-quotes-from-a-file\/","og_site_name":"JassWeb","article_published_time":"2022-09-18T20:25:36+00:00","author":"Kirat","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Kirat","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/jassweb.com\/solved\/solved-c-reading-specific-strings-with-quotes-from-a-file\/#article","isPartOf":{"@id":"https:\/\/jassweb.com\/solved\/solved-c-reading-specific-strings-with-quotes-from-a-file\/"},"author":{"name":"Kirat","@id":"https:\/\/jassweb.com\/solved\/#\/schema\/person\/65c9c7b7958150c0dc8371fa35dd7c31"},"headline":"[Solved] C- Reading specific strings with quotes from a file","datePublished":"2022-09-18T20:25:36+00:00","mainEntityOfPage":{"@id":"https:\/\/jassweb.com\/solved\/solved-c-reading-specific-strings-with-quotes-from-a-file\/"},"wordCount":61,"publisher":{"@id":"https:\/\/jassweb.com\/solved\/#organization"},"keywords":["c++","file"],"articleSection":["Solved"],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/jassweb.com\/solved\/solved-c-reading-specific-strings-with-quotes-from-a-file\/","url":"https:\/\/jassweb.com\/solved\/solved-c-reading-specific-strings-with-quotes-from-a-file\/","name":"[Solved] C- Reading specific strings with quotes from a file - JassWeb","isPartOf":{"@id":"https:\/\/jassweb.com\/solved\/#website"},"datePublished":"2022-09-18T20:25:36+00:00","breadcrumb":{"@id":"https:\/\/jassweb.com\/solved\/solved-c-reading-specific-strings-with-quotes-from-a-file\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/jassweb.com\/solved\/solved-c-reading-specific-strings-with-quotes-from-a-file\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/jassweb.com\/solved\/solved-c-reading-specific-strings-with-quotes-from-a-file\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/jassweb.com\/solved\/"},{"@type":"ListItem","position":2,"name":"[Solved] C- Reading specific strings with quotes from a file"}]},{"@type":"WebSite","@id":"https:\/\/jassweb.com\/solved\/#website","url":"https:\/\/jassweb.com\/solved\/","name":"JassWeb","description":"Build High-quality Websites","publisher":{"@id":"https:\/\/jassweb.com\/solved\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/jassweb.com\/solved\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/jassweb.com\/solved\/#organization","name":"Jass Web","url":"https:\/\/jassweb.com\/solved\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/jassweb.com\/solved\/#\/schema\/logo\/image\/","url":"https:\/\/jassweb.com\/wp-content\/uploads\/2021\/02\/jass-website-logo-1.png","contentUrl":"https:\/\/jassweb.com\/wp-content\/uploads\/2021\/02\/jass-website-logo-1.png","width":693,"height":132,"caption":"Jass Web"},"image":{"@id":"https:\/\/jassweb.com\/solved\/#\/schema\/logo\/image\/"}},{"@type":"Person","@id":"https:\/\/jassweb.com\/solved\/#\/schema\/person\/65c9c7b7958150c0dc8371fa35dd7c31","name":"Kirat","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/jassweb.com\/solved\/wp-content\/litespeed\/avatar\/1261af3c9451399fa1336d28b98ea3bb.jpg?ver=1776403586","url":"https:\/\/jassweb.com\/solved\/wp-content\/litespeed\/avatar\/1261af3c9451399fa1336d28b98ea3bb.jpg?ver=1776403586","contentUrl":"https:\/\/jassweb.com\/solved\/wp-content\/litespeed\/avatar\/1261af3c9451399fa1336d28b98ea3bb.jpg?ver=1776403586","caption":"Kirat"},"sameAs":["http:\/\/jassweb.com"],"url":"https:\/\/jassweb.com\/solved\/author\/jaspritsinghghumangmail-com\/"}]}},"_links":{"self":[{"href":"https:\/\/jassweb.com\/solved\/wp-json\/wp\/v2\/posts\/9463","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jassweb.com\/solved\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jassweb.com\/solved\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jassweb.com\/solved\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/jassweb.com\/solved\/wp-json\/wp\/v2\/comments?post=9463"}],"version-history":[{"count":0,"href":"https:\/\/jassweb.com\/solved\/wp-json\/wp\/v2\/posts\/9463\/revisions"}],"wp:attachment":[{"href":"https:\/\/jassweb.com\/solved\/wp-json\/wp\/v2\/media?parent=9463"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jassweb.com\/solved\/wp-json\/wp\/v2\/categories?post=9463"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jassweb.com\/solved\/wp-json\/wp\/v2\/tags?post=9463"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}