Magic go language (basic syntax)

Magic go language (basic syntax)

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Learning a new language begins with the basic syntax. After all, it is boring to use grammar books to learn a language. Therefore, we may wish to start learning a new language from the simplest example. There are not many examples, but they are representative.

(A) simplest code

package mainimport "fmt"func main() {        fmt.Println("hello, world")}

(B) Basic functions

package mainimport "fmt"func sub(a int, b int) int {        return a - b;}func main() {        fmt.Println(sub(2, 3))}

(C) if statement Learning

package mainimport "fmt"func compare(a int, b int) {        if(a > b) {                fmt.Println("greater")        }else{                fmt.Println("smaller")        }}func main() {        compare(3, 2)}

(D) switch statement Learning

package mainimport "fmt"func test(a int) {        switch (a) {                case 1:                        fmt.Println("1")                case 2:                        fmt.Println("2")                default:                        fmt.Println("error")        }}func main() {        test(1)        test(2)        test(3)}

(E) loop statement Learning

package mainimport "fmt"func show(data int) {        var index int        index = 0        for {                if(index >= data) {                        break                }                fmt.Println(index)                index ++                continue        }}func main() {        show(10)}

(F) structured learning

package mainimport "fmt"type node struct {        data int}func(p* node)set(val int)() {        p.data = val}func(p* node)get() int {        return p.data;}func main() {        n := node{data: 10}        m := &n        m.set(12)        fmt.Println(m.get())}

Let's talk about so much. Next time we will introduce some advanced functions.