{"id":457,"date":"2021-01-30T02:40:45","date_gmt":"2021-01-29T21:10:45","guid":{"rendered":"https:\/\/www.codingbroz.com\/?p=457"},"modified":"2021-06-20T16:46:00","modified_gmt":"2021-06-20T11:16:00","slug":"students-marks-sum-in-c-solution","status":"publish","type":"post","link":"https:\/\/www.codingbroz.com\/students-marks-sum-in-c-solution\/","title":{"rendered":"Students Marks Sum in C | HackerRank Solution"},"content":{"rendered":"\n<p>What&#8217;s up coderz, today we will be solving <strong>Students Marks Sum HackerRank Solution in C<\/strong>.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1167\" height=\"675\" src=\"https:\/\/www.codingbroz.com\/wp-content\/uploads\/2021\/01\/student-marks-sum-in-c-hackerrank-solution-codingbroz.png\" alt=\"Students Marks Sum HackerRank Solution in C\" class=\"wp-image-459\" srcset=\"https:\/\/www.codingbroz.com\/wp-content\/uploads\/2021\/01\/student-marks-sum-in-c-hackerrank-solution-codingbroz.png 1167w, https:\/\/www.codingbroz.com\/wp-content\/uploads\/2021\/01\/student-marks-sum-in-c-hackerrank-solution-codingbroz-768x444.png 768w\" sizes=\"(max-width: 1167px) 100vw, 1167px\" \/><\/figure>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_65 ez-toc-wrap-left counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<label for=\"ez-toc-cssicon-toggle-item-663636d6b8133\" class=\"ez-toc-cssicon-toggle-label\"><label class=\"ez-toc-title\">Table of Contents<\/label>\n<span class=\"ez-toc-cssicon\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #0090ff;color:#0090ff\" 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: #0090ff;color:#0090ff\" 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><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-663636d6b8133\" checked \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.codingbroz.com\/students-marks-sum-in-c-solution\/#Objective\" title=\"Objective\">Objective<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.codingbroz.com\/students-marks-sum-in-c-solution\/#Input_Format\" title=\"Input Format\">Input Format<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.codingbroz.com\/students-marks-sum-in-c-solution\/#Constraints\" title=\"Constraints\">Constraints<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.codingbroz.com\/students-marks-sum-in-c-solution\/#Output_Format\" title=\"Output Format\">Output Format<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.codingbroz.com\/students-marks-sum-in-c-solution\/#Solution_%E2%80%93_Students_Marks_Sum_HackerRank_Solution_in_C\" title=\"Solution &#8211; Students Marks Sum HackerRank Solution in C\">Solution &#8211; Students Marks Sum HackerRank Solution in C<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Objective\"><\/span><strong>Objective<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>You are given an array of integers, marks, denoting the marks scored by students in a class.<\/p>\n\n\n\n<ul><li>The alternating elements marks0, marks2, marks4 and so on denote the marks of boys.<\/li><li>Similarly,marks1, marks3, marks5 and so on denote the marks of girls.<\/li><\/ul>\n\n\n\n<p>The array name, marks, works as a pointer which stores the base address of that array. In other words, marks contains the address where marks0 is stored in the memory.<\/p>\n\n\n\n<p>For example, let marks = [3,2,5] and marks stores 0x7fff9575c05f. Then, 0x7fff9575c05f is the memory address of marks0.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img decoding=\"async\" width=\"241\" height=\"151\" src=\"https:\/\/www.codingbroz.com\/wp-content\/uploads\/2021\/01\/student-marks-sum-in-c-hackerrank-solution-.png\" alt=\"student-marks-sum-in-c-hackerrank-solution-codingbroz\" class=\"wp-image-460\"\/><\/figure><\/div>\n\n\n\n<p>Complete the function, marks_summation(int* marks, char gender, int number_of_students) which returns the total sum of:<\/p>\n\n\n\n<ul><li>marks of boys if gender = b<\/li><\/ul>\n\n\n\n<ul><li>marks of girls if gender = g<\/li><\/ul>\n\n\n\n<p>The locked code stub reads the elements of marks along with gender. Then, it calls the function marks_summation(marks, gender, number_of_students) to get the sum of alternate elements as explained above and then prints the sum.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Input_Format\"><\/span><strong>Input Format<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul><li>The first line contains number_of_students, denoting the number of students in the class, hence the number of elements in marks.<\/li><li>Each of the number_of_students subsequent lines contains marks(i).<\/li><li>The next line contains gender.<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Constraints\"><\/span><strong>Constraints<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul><li>1 &lt;= number_of_students &lt;= 10^3<\/li><li>1 &lt;= marks(i) &lt;= 10^3 (where 0 &lt;= i &lt; number_of_students)<\/li><li>gender = g or b<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Output_Format\"><\/span><strong>Output Format<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>The output should contain the sum of all the alternate elements in marks as explained above.<\/p>\n\n\n\n<p><strong>Sample Input 0<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>3\n3\n2\n5\nb\n<\/code><\/pre>\n\n\n\n<p><strong>Sample Output 0<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>8<\/code><\/pre>\n\n\n\n<p><strong>Explanation 0<\/strong><\/p>\n\n\n\n<p>marks = [3, 2, 5] and gender = b.<\/p>\n\n\n\n<p>So, marks0 + marks2 = 3 + 5 = 8.<\/p>\n\n\n\n<p><strong>Sample Input 1<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>5\n1\n2\n3\n4\n5\ng\n<\/code><\/pre>\n\n\n\n<p><strong>Sample Output 1<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>6\n<\/code><\/pre>\n\n\n\n<p><strong>Explanation 1<\/strong><\/p>\n\n\n\n<p>marks = [1, 2, 3, 4, 5] and gender = g&nbsp;<\/p>\n\n\n\n<p>So, sum = marks1 + marks3 = 2 + 4 = 6.<\/p>\n\n\n\n<p><strong>Sample Input 2<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>1\n5\ng\n<\/code><\/pre>\n\n\n\n<p><strong>Sample Output 2<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>0<\/code><\/pre>\n\n\n\n<p><strong>Explanation 2<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>marks = &#91;5] and gender = g \nHere, marks1 does not exist. So, sum = 0.\n<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Solution_%E2%80%93_Students_Marks_Sum_HackerRank_Solution_in_C\"><\/span><strong>Solution &#8211; Students Marks Sum HackerRank Solution in C<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"c\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">#include &lt;stdio.h>\n#include &lt;string.h>\n#include &lt;math.h>\n#include &lt;stdlib.h>\n\n\/\/Complete the following function.\n\nint marks_summation(int* marks, int number_of_students, char gender) {\n  \/\/Write your code here.\n  int sum = 0,i=0;\n    for( i=(gender=='g'?1:0);i&lt;number_of_students;i=i+2)\n   {\n    sum += *(marks+i);\n   }\n  \n  return sum;\n}\n\nint main() {\n    int number_of_students;\n    char gender;\n    int sum;\n  \n    scanf(\"%d\", &amp;number_of_students);\n    int *marks = (int *) malloc(number_of_students * sizeof (int));\n \n    for (int student = 0; student &lt; number_of_students; student++) {\n        scanf(\"%d\", (marks + student));\n    }\n    \n    scanf(\" %c\", &amp;gender);\n    sum = marks_summation(marks, number_of_students, gender);\n    printf(\"%d\", sum);\n    free(marks);\n \n    return 0;\n}\n<\/pre>\n\n\n\n<script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script>\n<ins class=\"adsbygoogle\"\n     style=\"display:block; text-align:center;\"\n     data-ad-layout=\"in-article\"\n     data-ad-format=\"fluid\"\n     data-ad-client=\"ca-pub-5246141430412355\"\n     data-ad-slot=\"8798433565\"><\/ins>\n<script>\n     (adsbygoogle = window.adsbygoogle || []).push({});\n<\/script>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1428\" height=\"864\" src=\"https:\/\/www.codingbroz.com\/wp-content\/uploads\/2021\/01\/student-marks-sum-in-c-hackerrank-solution.png\" alt=\"student-marks-sum-in-c-hackerrank-solution-codingbroz\" class=\"wp-image-461\" srcset=\"https:\/\/www.codingbroz.com\/wp-content\/uploads\/2021\/01\/student-marks-sum-in-c-hackerrank-solution.png 1428w, https:\/\/www.codingbroz.com\/wp-content\/uploads\/2021\/01\/student-marks-sum-in-c-hackerrank-solution-768x465.png 768w\" sizes=\"(max-width: 1428px) 100vw, 1428px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1439\" height=\"906\" src=\"https:\/\/www.codingbroz.com\/wp-content\/uploads\/2021\/01\/student-marks-sum-in-c-hackerrank-solution-resultcodingbroz.png\" alt=\"student-marks-sum-in-c-hackerrank-solution-codingbroz\" class=\"wp-image-462\" srcset=\"https:\/\/www.codingbroz.com\/wp-content\/uploads\/2021\/01\/student-marks-sum-in-c-hackerrank-solution-resultcodingbroz.png 1439w, https:\/\/www.codingbroz.com\/wp-content\/uploads\/2021\/01\/student-marks-sum-in-c-hackerrank-solution-resultcodingbroz-768x484.png 768w\" sizes=\"(max-width: 1439px) 100vw, 1439px\" \/><\/figure>\n\n\n\n<p><strong>Disclaimer:<\/strong> The above Problem (<strong><a aria-label=\"Students Marks Sum (opens in a new tab)\" href=\"https:\/\/www.hackerrank.com\/challenges\/students-marks-sum\/problem\" target=\"_blank\" rel=\"noreferrer noopener nofollow\" class=\"rank-math-link\">Students Marks Sum<\/a><\/strong>) is generated by <strong><a aria-label=\"Hacker Rank (opens in a new tab)\" href=\"https:\/\/www.hackerrank.com\/\" target=\"_blank\" rel=\"noreferrer noopener\" class=\"rank-math-link\">Hacker Rank<\/a><\/strong> but the Solution is provided by <strong><a href=\"https:\/\/www.codingbroz.com\/\" class=\"rank-math-link\">CodingBroz<\/a><\/strong>.<\/p>\n\n\n\n<p><strong>Broz Who Code <\/strong><\/p>\n\n\n\n<p><strong>CodingBroz<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>What&#8217;s up coderz, today we will be solving Students Marks Sum HackerRank Solution in C. Objective You are given an array of integers, marks, denoting the marks scored by students in a class. The alternating elements marks0, marks2, marks4 and so on denote the marks of boys. Similarly,marks1, marks3, marks5 and so on denote the [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":459,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[9,158],"tags":[22,80],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"https:\/\/www.codingbroz.com\/wp-content\/uploads\/2021\/01\/student-marks-sum-in-c-hackerrank-solution-codingbroz.png","jetpack-related-posts":[],"_links":{"self":[{"href":"https:\/\/www.codingbroz.com\/wp-json\/wp\/v2\/posts\/457"}],"collection":[{"href":"https:\/\/www.codingbroz.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.codingbroz.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.codingbroz.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.codingbroz.com\/wp-json\/wp\/v2\/comments?post=457"}],"version-history":[{"count":4,"href":"https:\/\/www.codingbroz.com\/wp-json\/wp\/v2\/posts\/457\/revisions"}],"predecessor-version":[{"id":3379,"href":"https:\/\/www.codingbroz.com\/wp-json\/wp\/v2\/posts\/457\/revisions\/3379"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.codingbroz.com\/wp-json\/wp\/v2\/media\/459"}],"wp:attachment":[{"href":"https:\/\/www.codingbroz.com\/wp-json\/wp\/v2\/media?parent=457"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.codingbroz.com\/wp-json\/wp\/v2\/categories?post=457"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.codingbroz.com\/wp-json\/wp\/v2\/tags?post=457"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}