为什么我不能在下一行放开括号？

Question

Encountered a strange error when I tried to compile following code:

    package main

    import fmt "fmt"

    func main()
    {
       var arr [3]int
       for i:=0; i<3; i++
       {
         fmt.Printf("%d",arr[i])
       }
    }

Error is as follows:

    unexpected semicolon or newline before {

After correction following code worked:

    package main

    import fmt "fmt"

    func main(){
       var arr [3]int
       for i:=0; i<3; i++{
         fmt.Printf("%d",arr[i])
       }
    }

Is GO language this much strictly Typed? And this doesn't have warnings also. Should this not be a programmers choice how he wants to format his code? Go language warnings and errors

Answer 1

The Go language does automatic semicolon insertion, and thus the only allowed place for { is at the end of the preceding line. Always write Go code using the same style as gofmt produces and you will have no problems.

See Go's FAQ: Why are there braces but no semicolons? And why can't I put the opening brace on the next line?