{"id":2377,"date":"2020-06-28T19:07:40","date_gmt":"2020-06-28T13:37:40","guid":{"rendered":"https:\/\/golangbyexamples.com\/?p=2377"},"modified":"2020-11-21T12:31:52","modified_gmt":"2020-11-21T07:01:52","slug":"hello-world-golang","status":"publish","type":"post","link":"https:\/\/golangbyexamples.com\/hello-world-golang\/","title":{"rendered":"Hello World in Go (Golang)"},"content":{"rendered":"\n

<\/p>\n\n\n\n

Let’s see how to write a simple Hello World program in golang. Create a file with an extension .go. Let’s name this file helloworld.go<\/strong>. Below will be the contents of the file.<\/p>\n\n\n\n

package main  \n\nimport \"fmt\" \n\nfunc main() { \n  fmt.Println(\"Hello World\") \n}<\/code><\/pre>\n\n\n\n
Some points to note about above program<\/p>\n\n\n\n
  • Every go file starts with a package name. In the above case it is package main<\/strong><\/li><\/ul>\n\n\n\n
    • Only main<\/strong> package is executable.<\/li><\/ul>\n\n\n\n
      • The main<\/strong> package will contain a main<\/strong> function that denotes the start of a program<\/li><\/ul>\n\n\n\n
        • We are using the Println<\/strong> function of fmt<\/strong> package to print the Hello World<\/strong> string<\/li><\/ul>\n\n\n\n
          fmt.Println(\"Hello World\")<\/code><\/pre>\n\n\n\n
          Let’s run this file now. For running, go to the directory which contains this file. Type below command to run the file. What this command will do is compile the go file and immediately run it.<\/p>\n\n\n\n
          go run helloworld.go<\/code><\/pre>\n\n\n\n
          Output<\/strong><\/p>\n\n\n\n
          Hello World<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
          Let’s see how to write a simple Hello World program in golang. Create a file with an extension .go. Let’s name this file helloworld.go. Below will be the contents of the file. Some…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":"","footnotes":"","jetpack_publicize_message":"","jetpack_is_tweetstorm":false},"categories":[1],"tags":[],"class_list":["post-2377","post","type-post","status-publish","format-standard","hentry","category-tech"],"yoast_head":"\nHello World in Go (Golang) - Welcome To Golang By Example<\/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:\/\/golangbyexamples.com\/hello-world-golang\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Hello World in Go (Golang) - Welcome To Golang By Example\" \/>\n<meta property=\"og:description\" content=\"Let’s see how to write a simple Hello World program in golang. 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