Go编程语言允许使用一个循环内嵌套另一个循环。下面的内容展示几个例子来说明这个概念。

语法

在Go语言中嵌套for循环语句的语法如下：

for [condition |  ( init; condition; increment ) | Range]
{
   for [condition |  ( init; condition; increment ) | Range]
   {
      statement(s);
   }
   statement(s);
}

例子：

下面的程序使用嵌套for循环从2至100找出的素数：

package main

import "fmt"

func main() {
   /* local variable definition */
   var i, j int

   for i=2; i < 100; i++ {
      for j=2; j <= (i/j); j++ {
         if(i%j==0) {
            break; // if factor found, not prime
         }
      }
      if(j > (i/j)) {
         fmt.Printf("%d is prime\n", i);
      }
   }  
}

当上述代码被编译和执行时，它产生了以下结果：

2 is prime
3 is prime
5 is prime
7 is prime
11 is prime
13 is prime
17 is prime
19 is prime
23 is prime
29 is prime
31 is prime
37 is prime
41 is prime
43 is prime
47 is prime
53 is prime
59 is prime
61 is prime
67 is prime
71 is prime
73 is prime
79 is prime
83 is prime
89 is prime
97 is prime