{"id":9818,"date":"2022-08-17T12:23:48","date_gmt":"2022-08-17T12:23:48","guid":{"rendered":"https:\/\/prwatech.in\/blog\/?p=9818"},"modified":"2024-04-15T09:43:39","modified_gmt":"2024-04-15T09:43:39","slug":"go-data-type-understanding-data-types-in-go","status":"publish","type":"post","link":"https:\/\/prwatech.in\/blog\/go-lang\/go-data-type-understanding-data-types-in-go\/","title":{"rendered":"Go Data Type"},"content":{"rendered":"

Understanding Data Types in Go<\/span><\/h2>\n

 <\/p>\n

Go has three<\/a> basic data<\/a> types:<\/strong><\/p>\n

    \n
  1. Bool <\/strong><\/li>\n
  2. Numerical<\/strong><\/li>\n
  3. String<\/strong><\/li>\n<\/ol>\n

     <\/p>\n

      \n
    1. This program shows some of the different data types in Go\n
      package main\r\nimport \"fmt\"\r\n\r\nfunc main() {\r\n\tvar a bool = true          \/\/ Boolean\r\n\tvar b int = 5              \/\/ Integer\r\n\tvar c float32 = 6.14       \/\/ Floating point number\r\n\tvar d string = \"PRWATECH!\" \/\/ String\r\n\r\n\tfmt.Println(\"Boolean: \", a)\r\n\tfmt.Println(\"Integer: \", b)\r\n\tfmt.Println(\"Float:   \", c)\r\n\tfmt.Println(\"String:  \", d)\r\n}\t\r\n<\/pre>\n
      Output :<\/p>\n
      PS C:\\GO_Language\\datatype> go run type.go\r\nBoolean:  true\r\nInteger:  5\r\nFloat:    6.14\r\nString:   PRWATECH!\r\n<\/pre>\n<\/li>\n
    2. Boolean data type: <\/strong>datatype is declared with the bool keyword and can take the values true<\/strong> or false<\/strong>.\n
        \n
      1. This program shows some different ways to declare Boolean variables:\n
        package main\r\nimport \"fmt\"\r\nfunc main() {\r\n    var b1 bool = true\r\n    var b2 = true\r\n    var b3 bool\r\n    b4 := true\r\n    fmt.Println(b1)\r\n    fmt.Println(b2)\r\n    fmt.Println(b3)\r\n    fmt.Println(b4)\r\n}\r\n<\/pre>\n
        Output :<\/p>\n
        PS C:\\GO_Language\\datatype> go run bool.go\r\ntrue\r\ntrue\r\nfalse\r\ntrue\r\n<\/pre>\n<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n
          \n
        • \n
            \n
          • \n
              \n
            • Integer data type: <\/strong>are used to store a whole no. without decimals, like 35.50.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n
                \n
              • \n
                  \n
                • \n
                    \n
                  • Integer has two types:<\/strong>\n
                      \n
                    1. Signed integers<\/li>\n
                    2. Unsigned integers<\/li>\n<\/ol>\n
                       <\/p>\n
                        \n
                      • Singed integer:<\/strong><\/li>\n<\/ul>\n
                        Signed integers, declared with one of the\u00a0int\u00a0keywords, can store both positive and negative values<\/p>\n
                        package main\r\n\r\nimport \"fmt\"\r\n\r\nfunc main() {\r\n    var x int = 50\r\n    var y int = 40\r\n    fmt.Printf(\"Type: %T, value: %v \\n\", x, x)\r\n    fmt.Printf(\"Type: %T, value: %v\", y, y)\r\n}\r\n<\/pre>\n
                        Output :<\/p>\n
                        PS C:\\GO_Language\\datatype> go run int1.go\r\nType: int, value: 50 \r\nType: int, value: 40\r\n<\/pre>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n
                          \n
                        • \u00a0 \u00a0 \u00a0 \u00a0 \u00a0Unsigned integers:<\/strong><\/li>\n<\/ul>\n
                          Unsigned integers, declared with one of the\u00a0uint\u00a0keywords, can only store non-negative values:<\/p>\n
                          package main\r\nimport \"fmt\"\r\n\r\nfunc main() {\r\n    var x uint = 50\r\n    var y uint = 450\r\n\r\n    fmt.Printf(\"Type: %T, value: %v \\n\", x, x)\r\n    fmt.Printf(\"Type: %T, value: %v\", y, y)\r\n}\r\n\r\n<\/pre>\n
                          Output :<\/p>\n
                          PS C:\\GO_Language\\datatype> go run int2.go\r\n  \r\nType: uint, value: 50 \r\nType: uint, value: 450\r\n<\/pre>\n
                           <\/p>\n
                          3)float data type:<\/strong><\/p>\n
                          \u00a0<\/strong>are used to store positive and negative no. which a decimal point, like 35.3, -32, to 3423.243525.<\/p>\n
                           <\/p>\n
                          \u00a0<\/strong><\/p>\n
                          Type\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 size\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Range<\/strong><\/p>\n
                          Float32\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 32bits\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 -34e+38 to 3.4e+38.<\/p>\n
                          Float64\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 64bits\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 -1.7e+308 to 3.4e+308.<\/p>\n
                          This program shows how to declare some variables of type\u00a0float32:<\/p>\n
                          package main\r\n\r\nimport \"fmt\"\r\n\r\nfunc main() {\r\n    var x float32 = 23.78\r\n    var y float32 = 3.4e+38\r\n\r\n    fmt.Printf(\"Type: %T, value: %v\\n\", x, x)\r\n    fmt.Printf(\"Type: %T, value: %v\", y, y)\r\n}\r\n<\/pre>\n
                          output :<\/p>\n
                          PS C:\\GO_Language\\datatype> go run float1.go\r\n  \r\nType: float32, value: 23.78\r\nType: float32, value: 3.4e+38\r\n<\/pre>\n
                           <\/p>\n
                           <\/p>\n
                          This Progeam shows how to declare a variable of type\u00a0float64:<\/p>\n
                          package main\r\nimport \"fmt\"\r\n\r\nfunc main() {\r\n    var x float64 = 1.7e+308\r\n    \r\n    fmt.Printf(\"Type: %T, value: %v\", x, x)\r\n    \r\n}\r\n<\/pre>\n
                          check output :<\/p>\n
                          PS C:\\GO_Language\\datatype> go run float2.go\r\n   \r\nType: float64, value: 1.7e+308\r\n<\/pre>\n
                           <\/p>\n
                           <\/p>\n
                          3)String Data type: <\/strong>the string datatype is use to store a sequence of characters. String values must be surround by double quotes:<\/p>\n
                          package main\r\n\r\nimport \"fmt\"\r\n\r\nfunc main() {\r\n    var txt1 string = \"parwatech\"\r\n    var txt2 string\r\n    txt3 := \"World 1\"\r\n\r\n    fmt.Printf(\"Type: %T, value: %\\n\", txt1, txt1)\r\n    fmt.Printf(\"Type: %T, value: %v\\n\", txt2, txt2)\r\n    fmt.Printf(\"Type: %T, value: %v\\n\", txt3, txt3)\r\n}\r\n<\/pre>\n
                          output:<\/p>\n
                          PS C:\\GO_Language\\datatype> go run str.go   \r\n \r\nType: string, value: parwatech \r\nType: string, value:  \r\nType: string, value: World 1\r\n<\/pre>\n
                          Understanding Data Types in Go<\/p>\n","protected":false},"excerpt":{"rendered":"
                          Understanding Data Types in Go   Go has three basic data types: Bool Numerical String   This program shows some of the different data types in Go package main import “fmt” func main() { var a bool = true \/\/ Boolean var b int = 5 \/\/ Integer var c float32 = 6.14 \/\/ Floating […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[666,1707],"tags":[2023,1560,1557,2022,1558,1559],"class_list":["post-9818","post","type-post","status-publish","format-standard","hentry","category-go-lang","category-golang-modules","tag-an-introduction-to-gos-basic-syntax-and-data-types","tag-bool","tag-go-datatypes","tag-how-to-find-the-type-of-a-variable-in-golang","tag-integer","tag-numerical"],"acf":[],"yoast_head":"\nUnderstanding Data Types in Go - Prwatech<\/title>\n<meta name=\"description\" content=\"Master Understanding Data Types in Go - 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