In-depth understanding of different data types in Go language

To understand the different data types in Go language, you need specific code examples

As a statically typed programming language, Go language has rich data types, including basic Data types and composite data types. Mastering the characteristics and usage of different data types is crucial to writing efficient and accurate programs. The following will introduce several common data types in Go language with specific code examples.

1. Basic data types:
   Go language provides some basic data types, including integer, floating point, Boolean and string types.

Integer type:

package main

import "fmt"

func main() {
    var a int = 10
    fmt.Printf("整型变量a的值为：%d
", a)

    // 其他整型类型
    var b int8 = 127
    var c int16 = 32767
    var d int32 = 2147483647
    var e int64 = 9223372036854775807
    fmt.Printf("整型变量b的值为：%d
", b)
    fmt.Printf("整型变量c的值为：%d
", c)
    fmt.Printf("整型变量d的值为：%d
", d)
    fmt.Printf("整型变量e的值为：%d
", e)
}

Floating point type:

package main

import "fmt"

func main() {
    var f1 float32 = 3.14159
    var f2 float64 = 3.1415926535897932384626433
    fmt.Printf("浮点型变量f1的值为：%f
", f1)
    fmt.Printf("浮点型变量f2的值为：%f
", f2)
}

Boolean type:

package main

import "fmt"

func main() {
    var b1 bool = true
    var b2 bool = false
    fmt.Printf("布尔型变量b1的值为：%t
", b1)
    fmt.Printf("布尔型变量b2的值为：%t
", b2)
}

String type:

package main

import "fmt"

func main() {
    var str1 string = "Hello, Go"
    str2 := "Hello, 世界"
    fmt.Printf("字符串str1的值为：%s
", str1)
    fmt.Printf("字符串str2的值为：%s
", str2)
}

2. Composite data types
   In addition to basic data types, the Go language also provides some composite data types, including arrays, slices, dictionaries, and structures.

Array:

package main

import "fmt"

func main() {
    var arr [5]int
    arr[0] = 10
    arr[1] = 20
    arr[2] = 30
    arr[3] = 40
    arr[4] = 50
    fmt.Println("数组arr的值为：", arr)
}

Slice:

package main

import "fmt"

func main() {
    var slice []int
    slice = make([]int, 5)
    slice[0] = 10
    slice[1] = 20
    slice[2] = 30
    slice[3] = 40
    slice[4] = 50
    fmt.Println("切片slice的值为：", slice)
}

Dictionary:

package main

import "fmt"

func main() {
    var dict map[string]int
    dict = make(map[string]int)
    dict["a"] = 10
    dict["b"] = 20
    dict["c"] = 30
    fmt.Println("字典dict的值为：", dict)
}

Structure:

package main

import "fmt"

type Person struct {
    Name string
    Age  int
}

func main() {
    var p1 Person
    p1.Name = "Tom"
    p1.Age = 18
    fmt.Printf("结构体p1的值为：%v
", p1)
}

These code examples cover Learn about several common data types in Go language and how to use them. By understanding and mastering these data types, I believe readers can write Go programs more effectively. Of course, the Go language also provides other rich data types, and readers can consult relevant materials for in-depth study.

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