{"id":4492,"date":"2021-10-22T23:00:00","date_gmt":"2021-10-22T17:30:00","guid":{"rendered":"https:\/\/www.codingbroz.com\/?p=4492"},"modified":"2021-10-22T12:13:07","modified_gmt":"2021-10-22T06:43:07","slug":"c-program-to-calculate-area-of-a-circle","status":"publish","type":"post","link":"https:\/\/www.codingbroz.com\/c-program-to-calculate-area-of-a-circle\/","title":{"rendered":"C Program To Calculate Area of a Circle"},"content":{"rendered":"\n<p>In this post, we will learn<strong> how to write a program to calculate the area of a circle in the C<\/strong> Programming language.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/www.codingbroz.com\/wp-content\/uploads\/2021\/10\/c-program-to-calculate-area-of-a-circle-codingbroz.png\" alt=\"C Program To Calculate Area of a Circle\" class=\"wp-image-4494\" srcset=\"https:\/\/www.codingbroz.com\/wp-content\/uploads\/2021\/10\/c-program-to-calculate-area-of-a-circle-codingbroz.png 1200w, https:\/\/www.codingbroz.com\/wp-content\/uploads\/2021\/10\/c-program-to-calculate-area-of-a-circle-codingbroz-768x432.png 768w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p>A circle is a shape consisting of all points in a plane that are at a given distance from a given point, the center.<\/p>\n\n\n\n<p>The area of a circle is<strong> pi times the radius squared <\/strong>(<strong>A = \u03c0 r\u00b2<\/strong>), where<strong> r<\/strong> is the radius of the circle and <strong>\u03c0 = 3.14<\/strong>(approx).<\/p>\n\n\n\n<p>We will be using the above formula in our program to calculate the area of a circle.<\/p>\n\n\n\n<p>So, without further ado, let\u2019s begin this tutorial.<\/p>\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-662c8fa2a6eac\" 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-662c8fa2a6eac\" 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\/c-program-to-calculate-area-of-a-circle\/#C_Program_To_Calculate_Area_of_a_Circle\" title=\"C Program To Calculate Area of a Circle\">C Program To Calculate Area of a Circle<\/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\/c-program-to-calculate-area-of-a-circle\/#How_Does_This_Program_Work\" title=\"How Does This Program Work ?\">How Does This Program Work ?<\/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\/c-program-to-calculate-area-of-a-circle\/#Conclusion\" title=\"Conclusion\">Conclusion<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"C_Program_To_Calculate_Area_of_a_Circle\"><\/span><strong>C Program To Calculate Area of a Circle<\/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=\"\">\/\/ C Program To Calculate Area of a Circle \n#include &lt;stdio.h>\nint main(){\n    float radius, area;\n    \n    \/\/ Asking for input\n    printf(\"Enter the radius of the circle: \");\n    scanf(\"%f\", &amp;radius);\n    \n    \/\/ Calculating area\n    area = 3.14 * radius * radius;\n    printf(\"Area of the circle is: %.2f\", area);\n    return 0;\n}\n<\/pre>\n\n\n\n<p><strong>Output<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Enter the radius of the circle: 7\r\nArea of the circle is: 153.86\r<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_Does_This_Program_Work\"><\/span><strong>How Does This Program Work ?<\/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=\"\">    float radius, area;<\/pre>\n\n\n\n<p>In this program, we have declared two float data type variables named <strong>radius<\/strong> and <strong>area<\/strong>.<\/p>\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=\"\">    \/\/ Asking for input\n    printf(\"Enter the radius of the circle: \");\n    scanf(\"%f\", &amp;radius);\n<\/pre>\n\n\n\n<p>Then, the user is asked to enter the radius of the circle. The value of radius will get stored in the radius named variable.<\/p>\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=\"\">    \/\/ Calculating area\n    area = 3.14 * radius * radius;\n<\/pre>\n\n\n\n<p>Then, we calculate the area of the circle using the formula <strong>\u03c0 r\u00b2<\/strong>. The value of <strong>\u03c0<\/strong> is approximately <strong>3.14<\/strong>.<\/p>\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=\"\">    printf(\"Area of the circle is: %.2f\", area);<\/pre>\n\n\n\n<p>Finally, the area of the circle is printed using <strong>printf()<\/strong> function. Here we have used<strong> %.2f<\/strong> format specifier because we want to display the result only till <strong>2 <\/strong>decimal places.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span><strong>Conclusion<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>I hope after going through this post, you understand <strong>how to write a program to calculate the area of a circle in C<\/strong>.<\/p>\n\n\n\n<p>If you have any doubt regarding the program, feel free to contact us in the comment section. We will be delighted to help you.<\/p>\n\n\n\n<p><strong>Also Read:<\/strong><\/p>\n\n\n\n<ul><li><strong><a href=\"https:\/\/www.codingbroz.com\/c-program-to-print-hello-world-without-using-semicolon\/\">C Program To Print &#8220;Hello, World&#8221; Without Using Semicolon<\/a><\/strong><\/li><li><strong><a href=\"https:\/\/www.codingbroz.com\/c-program-to-add-two-binary-numbers\/\">C Program To Add Two Binary Numbers<\/a><\/strong><\/li><li><strong><a href=\"https:\/\/www.codingbroz.com\/c-program-to-add-two-fractions\/\">C Program To Add Two Fractions<\/a><\/strong><\/li><li><strong><a href=\"https:\/\/www.codingbroz.com\/c-program-to-find-largest-element-in-an-array\/\">C Program To Find Largest Element in an Array<\/a><\/strong><\/li><li><strong><a href=\"https:\/\/www.codingbroz.com\/c-program-to-calculate-average-using-arrays\/\">C Program To Calculate Average Using Arrays<\/a><\/strong><\/li><\/ul>\n","protected":false},"excerpt":{"rendered":"<p>In this post, we will learn how to write a program to calculate the area of a circle in the C Programming 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