{"id":13940,"date":"2024-03-15T08:10:14","date_gmt":"2024-03-15T08:10:14","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-to-compare-the-sizes-of-three-numbers-using-the-swap-function-in-the-c-language\/"},"modified":"2025-08-06T01:23:52","modified_gmt":"2025-08-06T01:23:52","slug":"how-to-compare-the-sizes-of-three-numbers-using-the-swap-function-in-the-c-language","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-to-compare-the-sizes-of-three-numbers-using-the-swap-function-in-the-c-language\/","title":{"rendered":"C Programming: Compare Three Numbers"},"content":{"rendered":"<p>In the C language, the swap function can be used to compare the sizes of three numbers. Here is an example code:<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-meta\">#<span class=\"hljs-keyword\">include<\/span> <span class=\"hljs-string\">&lt;stdio.h&gt;<\/span><\/span>\r\n\r\n<span class=\"hljs-type\">void<\/span> <span class=\"hljs-title function_\">swap<\/span><span class=\"hljs-params\">(<span class=\"hljs-type\">int<\/span> *a, <span class=\"hljs-type\">int<\/span> *b)<\/span> {\r\n    <span class=\"hljs-type\">int<\/span> temp = *a;\r\n    *a = *b;\r\n    *b = temp;\r\n}\r\n\r\n<span class=\"hljs-type\">int<\/span> <span class=\"hljs-title function_\">main<\/span><span class=\"hljs-params\">()<\/span> {\r\n    <span class=\"hljs-type\">int<\/span> num1, num2, num3;\r\n\r\n    <span class=\"hljs-built_in\">printf<\/span>(<span class=\"hljs-string\">\"\u8bf7\u8f93\u5165\u4e09\u4e2a\u6574\u6570\uff1a\"<\/span>);\r\n    <span class=\"hljs-built_in\">scanf<\/span>(<span class=\"hljs-string\">\"%d %d %d\"<\/span>, &amp;num1, &amp;num2, &amp;num3);\r\n\r\n    <span class=\"hljs-keyword\">if<\/span> (num1 &gt; num2) {\r\n        swap(&amp;num1, &amp;num2);\r\n    }\r\n    <span class=\"hljs-keyword\">if<\/span> (num1 &gt; num3) {\r\n        swap(&amp;num1, &amp;num3);\r\n    }\r\n    <span class=\"hljs-keyword\">if<\/span> (num2 &gt; num3) {\r\n        swap(&amp;num2, &amp;num3);\r\n    }\r\n\r\n    <span class=\"hljs-built_in\">printf<\/span>(<span class=\"hljs-string\">\"\u4ece\u5c0f\u5230\u5927\u7684\u987a\u5e8f\u4e3a\uff1a%d %d %d\\n\"<\/span>, num1, num2, num3);\r\n    \r\n    <span class=\"hljs-keyword\">return<\/span> <span class=\"hljs-number\">0<\/span>;\r\n}\r\n<\/code><\/pre>\n<p>The code above defines a swap function that is used to exchange the values of two integers. In the main function, three integers are first input. Then, three if statements are used to compare the sizes of these three numbers and the swap function is called to ensure that their order is from smallest to largest. Finally, the output is in ascending order.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the C language, the swap function can be used to compare the sizes of three numbers. Here is an example code: #include &lt;stdio.h&gt; void swap(int *a, int *b) { int temp = *a; *a = *b; *b = temp; } int main() { int num1, num2, num3; printf(&#8220;\u8bf7\u8f93\u5165\u4e09\u4e2a\u6574\u6570\uff1a&#8221;); scanf(&#8220;%d %d %d&#8221;, &amp;num1, &amp;num2, &amp;num3); [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[331,381,9561,13614,9964],"class_list":["post-13940","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-c-language","tag-c-programming","tag-compare-numbers","tag-sort-numbers","tag-swap-function"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>C Programming: Compare Three Numbers - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Learn how to compare and sort three numbers using the swap function in C programming. 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