How to access another function of package main in another file?

Question

this is my file tree:

.
├── float.go
└── main.go

main.go:

package main

func main(){
    Float()
}

float.go:

package main

import "fmt"

func Float(){
    fmt.Println( "hello world")
}

when I try to compile the main.go, it throws an error

command-line-arguments ./main.go:4:2: undefined: Float

Why can't I use the function defined in another file of same packages?

If you break your `main` package into multiple files, you have to list all when running it: `go run main.go float.go` — icza, Jul 27 '18 at 11:13
as @icza has mentioned try running `go run *.go` when you have multiple files. — vishnu narayanan, Jul 27 '18 at 11:15
[`go run` is a toy](https://github.com/golang/go/issues/13440). As soon as you have something non-trivial (and a package with more than one source file qualifies) you should switch to `go build` or ` go install`. — Peter, Jul 27 '18 at 12:16

score 0 · Answer 1 · answered Jul 27 '18 at 11:20

0

As package main is split into multiple files, you have to pass all the files to the go compiler when building.

Either you could list it one by one like

go run main.go float.go

or you could

go run *.go

answered Jul 27 '18 at 11:20

vishnu narayanan

1 Answers1