5.Go by Example: For

Go by Example: For


for is Go’s only looping construct. Here are three basic types of for loops.

The most basic type, with a single condition.

A classic initial/condition/after for loop.

for without a condition will loop repeatedly until you break out of the loop or return from the enclosing function.

package mainimport "fmt"func main() {     i := 1    for i <= 3 {        fmt.Println(i)        i = i + 1    }     for j := 7; j <= 9; j++ {        fmt.Println(j)    }    for {        fmt.Println("loop")        break    }}

译：
for 关键字是在go语言中唯一一个循环结构，下面的就是for循环的三个基本类型结构

最基本的是一个单条件

一个是 初始值/条件/然后的自身处理条件对于 for循环

for 循环对于没有条件的将会一直循环直到break出循环，或者在外围函数返回

package mainimport "fmt"func main() {i := 1for i <= 3 { //相当于while循环fmt.Println(i)i = i + 1}for j := 7; j <= 10; j++ { //传统的for循环fmt.Println(j)}for { //类似于 do。。。while循环fmt.Println("loop")break}}

运行结果
go run for.go
1
2
3
7
8
9
10

loop

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