{"id":26933,"date":"2022-12-20T22:26:20","date_gmt":"2022-12-20T16:56:20","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-how-do-for-loops-work-in-c-closed\/"},"modified":"2022-12-20T22:26:20","modified_gmt":"2022-12-20T16:56:20","slug":"solved-how-do-for-loops-work-in-c-closed","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-how-do-for-loops-work-in-c-closed\/","title":{"rendered":"[Solved] How do for loops work in C? [closed]"},"content":{"rendered":"<p> [ad_1]<br \/>\n<\/p>\n<div id=\"answer-32939577\" class=\"answer js-answer accepted-answer js-accepted-answer\" data-answerid=\"32939577\" data-parentid=\"32939404\" 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>First of all, <code>x<\/code> and <code>n<\/code> never change, so let&#8217;s  put their values in the for loops and remove them from the code, to make it easier to understand.<\/p>\n<pre><code> int k = 0;\n for (int i = 0; i &lt; 7; i++) {\n\n   for (int j = 0; j &lt; 5; j++) { \n      b[i][j] = a[k];\n      k++;\n   }\n\n   i++; \n\n   for (int m = j; m &gt;= 0; m--) {\n      b[i][m] = a[k];\n      k++;\n   }\n}\n<\/code><\/pre>\n<p>\u2022 Before first iteration of the i loop<\/p>\n<pre><code> i = 0;\n k = 0;\n<\/code><\/pre>\n<p><em>j loop goes from 0 .. 4<\/em><\/p>\n<pre><code>b[0][0] = a[0];  \/\/ b[i][j] = a[k]\nb[0][1] = a[1];\nb[0][2] = a[2];\nb[0][3] = a[3];\nb[0][4] = a[4];\n<\/code><\/pre>\n<p><em>j loop exits because j has reached 5.<\/em><\/p>\n<p><em>k is same as j (starts at 0, incremented like j)<\/em><\/p>\n<p><em>i is incremented to become 1<\/em><\/p>\n<p><em>m loop goes from 5 .. 0<\/em><\/p>\n<pre><code>b[1][5] = a[5]; \/\/ b[i][m] = a[k]\nb[1][4] = a[6];\nb[1][3] = a[7];\nb[1][2] = a[8];\nb[1][1] = a[9];\nb[1][0] = a[10];\n<\/code><\/pre>\n<p><em>m loop exits with<\/em><\/p>\n<pre><code>m = -1;\nk = 11;\n<\/code><\/pre>\n<p>\u2022 At 2nd iteration of i loop:<\/p>\n<pre><code>i = 2;  (because i *for* loop increments it)\nk = 11;\n<\/code><\/pre>\n<p><em>j loop goes from 0 .. 4<\/em><\/p>\n<pre><code>b[2][0] = a[11];  \/\/ b[i][j] = a[k]\nb[2][1] = a[12];\nb[2][2] = a[13];\nb[2][3] = a[14];\nb[2][4] = a[15];\n<\/code><\/pre>\n<p><em>j loop exits because j has reached 5.<\/em><\/p>\n<p><em>k = 16;<\/em><\/p>\n<p><em>i is incremented to become 3<\/em><\/p>\n<p><em>m loop goes from 5 .. 0<\/em><\/p>\n<pre><code>b[3][5] = a[16]; \/\/ b[i][m] = a[k]\nb[3][4] = a[17];\nb[3][3] = a[18];\nb[3][2] = a[19];\nb[3][1] = a[20];\nb[3][0] = a[21];\n<\/code><\/pre>\n<p>.<br \/>\n.<br \/>\n.<\/p>\n<\/p><\/div>\n<div class=\"mt24\"><\/div>\n<\/div>\n<p>            <span class=\"d-none\" itemprop=\"commentCount\">3<\/span> <\/p><\/div>\n<\/div>\n<p>[ad_2]<\/p>\n<p>solved How do for loops work in C? [closed] <\/p>\n","protected":false},"excerpt":{"rendered":"<p>[ad_1] First of all, x and n never change, so let&#8217;s put their values in the for loops and remove them from the code, to make it easier to understand. int k = 0; for (int i = 0; i &lt; 7; i++) { for (int j = 0; j &lt; 5; j++) { b[i][j] &#8230; <a title=\"[Solved] How do for loops work in C? [closed]\" class=\"read-more\" href=\"https:\/\/jassweb.com\/solved\/solved-how-do-for-loops-work-in-c-closed\/\" aria-label=\"More on [Solved] How do for loops work in C? [closed]\">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":[1936,593],"class_list":["post-26933","post","type-post","status-publish","format-standard","hentry","category-solved","tag-computer-science","tag-for-loop"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>[Solved] How do for loops work in C? 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