Using CGO imports a pseudo-package "C"

[yete666]

When implementing an example that uses C code snippet, I get the following error when compiling.
what am I doing wrong?
thank you

package main

// #include <stdio.h>
// void hello() {
// printf("Hello from C")
//}
import "C"

import (
"embed"

"github.com/wailsapp/wails/v2"
"github.com/wailsapp/wails/v2/pkg/options"
"github.com/wailsapp/wails/v2/pkg/options/assetserver"

)

//go:embed all:frontend/dist
var assets embed.FS

func main() {
// Create an instance of the app structure
app := NewApp()
C.hello()
// Create application with options
err := wails.Run(&options.App{
Title: "myproject",
Width: 1024,
Height: 768,
AssetServer: &assetserver.Options{
Assets: assets,
},
BackgroundColour: &options.RGBA{R: 27, G: 38, B: 54, A: 1},
OnStartup: app.startup,
Bind: []interface{}{
app,
},
})

if err != nil {
	println("Error:", err.Error())
}

}

termial

Wails CLI v2.8.2

Executing: go mod tidy
• Generating bindings:
ERROR
# myproject
runtime.main_main·f: function main is undeclared in the main package

      exit status 1

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