{"id":145100,"date":"2025-05-20T15:01:52","date_gmt":"2025-05-20T09:31:52","guid":{"rendered":"https:\/\/data-flair.training\/blogs\/?p=145100"},"modified":"2025-05-20T15:01:52","modified_gmt":"2025-05-20T09:31:52","slug":"call-by-value-and-return-by-value-in-c","status":"publish","type":"post","link":"https:\/\/data-flair.training\/blogs\/call-by-value-and-return-by-value-in-c\/","title":{"rendered":"Call by Value and Return by Value in C"},"content":{"rendered":"<h3>Program 1<\/h3>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">#include&lt;stdio.h&gt;\r\n#include&lt;conio.h&gt;\r\nint swap(int a,int b);\r\nint main()\r\n{\r\n    int a,b;   \/\/ local\r\n    system(\"cls\");\r\n    printf(\"Enter two number\");\r\n    scanf(\"%d %d\",&amp;a,&amp;b);\r\n    printf(\"\\nBefore swaping %d %d\",a,b);\r\n    a,b=swap(a,b);\r\n    printf(\"\\nAfter swaping %d %d\",a,b);\r\n}\r\nint swap(int a,int b)  \/\/local\r\n{\r\n      a=a+b;\r\n      b=a-b;\r\n      a=a-b;\r\n      return(a,b);\r\n}\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\/\/ #include&lt;stdio.h&gt;\r\n\/\/ #include&lt;conio.h&gt;\r\n\/\/ int add(int,int,int,int);\r\n\/\/ int main()\r\n\/\/ {\r\n\/\/     int c=add(50,30);\r\n\/\/     printf(\"%d\",c);\r\n\/\/     return 0;\r\n\/\/ }\r\n\r\n\/\/ int add(int a,int b,int c,int d)\r\n\/\/ {\r\n\/\/       return(a+b);\r\n\r\n\/\/ }\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\/\/ int factorial(int n);\r\n\/\/ int main()\r\n\/\/ {\r\n\/\/      system(\"cls\");\r\n\/\/      int n,x;\r\n\/\/      printf(\"Enter a number\");\r\n\/\/      scanf(\"%d\",&amp;n);\r\n\/\/      x=factorial(n);\r\n\/\/      printf(\"\\nFactorial is %d\",x);\r\n\/\/      return 0;\r\n\/\/ }\r\n\/\/ int factorial(int n)\r\n\/\/ {\r\n\/\/      int f=1;\r\n\/\/      while(n!=0)\r\n\/\/      {\r\n\/\/         f=f*n;\r\n\/\/         n--;\r\n\/\/      }\r\n\/\/      return (f);\r\n\/\/ }\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\/\/ int addition(int,int);\r\n\/\/ int main()\r\n\/\/ {\r\n\/\/     system(\"cls\");\r\n\/\/       int a,b,c;\r\n\/\/       printf(\"Enter two number\");\r\n\/\/       scanf(\"%d%d\",&amp;a,&amp;b);\r\n\/\/       c=addition(a,b); \/\/ call by value\r\n\/\/       printf(\"\\nAddition is %d\",c);\r\n\/\/       if(c%2==0)\r\n\/\/          printf(\"\\nEven \");\r\n\/\/       else   \r\n\/\/       printf(\"\\nOdd\");\r\n\/\/     return 0;\r\n\/\/ }\r\n\/\/ int addition(int a,int b)\r\n\/\/ {\r\n\/\/     int c;\r\n\/\/     c=a+b;\r\n\/\/    return c;  \/\/return by value\r\n\/\/ }\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\/\/void display(int a);\r\n\/\/ int main()\r\n\/\/ {\r\n\/\/     system(\"cls\");\r\n\/\/     int a=10;\r\n\/\/     display(a);  \/\/local \r\n\/\/     printf(\"%d\",a);\r\n\/\/     return 0;\r\n\/\/ }\r\n\/\/ void display(int a) \/\/local\r\n\/\/ {\r\n\/\/     ++a;   \r\n\/\/ }<\/pre>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Program 1 #include&lt;stdio.h&gt; #include&lt;conio.h&gt; int swap(int a,int b); int main() { int a,b; \/\/ local system(&#8220;cls&#8221;); printf(&#8220;Enter two number&#8221;); scanf(&#8220;%d %d&#8221;,&amp;a,&amp;b); printf(&#8220;\\nBefore swaping %d %d&#8221;,a,b); a,b=swap(a,b); printf(&#8220;\\nAfter swaping %d %d&#8221;,a,b); } int swap(int a,int&#46;&#46;&#46;<\/p>\n","protected":false},"author":581,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[19488],"tags":[34227,34226,23914,34228,28585,29484,29219,29218,34225,29485],"class_list":["post-145100","post","type-post","status-publish","format-standard","hentry","category-c-programming","tag-c-call-by-value","tag-c-program-on-call-by-value-and-return-by-value","tag-c-programming","tag-c-return-by-value","tag-c-tutorial","tag-c-call-by-value-and-return-by-value","tag-c-practical","tag-c-program","tag-call-by-value-and-return-by-value","tag-call-by-value-and-return-by-value-in-c"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Call by Value and Return by Value in C - DataFlair<\/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:\/\/data-flair.training\/blogs\/call-by-value-and-return-by-value-in-c\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Call by Value and Return by Value in C - DataFlair\" \/>\n<meta property=\"og:description\" content=\"Program 1 #include&lt;stdio.h&gt; #include&lt;conio.h&gt; int swap(int a,int b); int main() { int a,b; \/\/ local system(&quot;cls&quot;); printf(&quot;Enter two number&quot;); scanf(&quot;%d %d&quot;,&amp;a,&amp;b); printf(&quot;nBefore swaping %d %d&quot;,a,b); a,b=swap(a,b); printf(&quot;nAfter swaping %d %d&quot;,a,b); } int swap(int a,int&#046;&#046;&#046;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/data-flair.training\/blogs\/call-by-value-and-return-by-value-in-c\/\" \/>\n<meta property=\"og:site_name\" content=\"DataFlair\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/DataFlairWS\/\" \/>\n<meta property=\"article:published_time\" content=\"2025-05-20T09:31:52+00:00\" \/>\n<meta name=\"author\" content=\"DataFlair Team\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@DataFlairWS\" \/>\n<meta name=\"twitter:site\" content=\"@DataFlairWS\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"DataFlair Team\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Call by Value and Return by Value in C - DataFlair","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:\/\/data-flair.training\/blogs\/call-by-value-and-return-by-value-in-c\/","og_locale":"en_US","og_type":"article","og_title":"Call by Value and Return by Value in C - DataFlair","og_description":"Program 1 #include&lt;stdio.h&gt; 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