> For the complete documentation index, see [llms.txt](https://zeyad-abulaban.gitbook.io/notes/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://zeyad-abulaban.gitbook.io/notes/golang-programming/variables.md).

# Variables

```go
package main

import (
	"fmt"
)

func main() {
	var i int
	i = 42
	var j int = 27
	k := 99     //Leaving the declaration for the compiler
	fmt.Printf("%T %T %T",i,j,k)
}
```

```go
package main

import (
	"fmt"
)

var (   //initalizing variables at the package level.

	i int = 1337   //No need to put "var" before them.
	j  int = 31337
	k string = "Meow"
)

func main() {
	fmt.Printf("%T, %T, %T\n", i, j, k)
}
```

## Notes

in go every variable you initialize have by default the value of 0 == false **Visibility**

* Lower case first letter for the package scope.
* Upper case flrst letter will export the variable globally.
* No private scope.

**Naming conventins**

* Pascal or camelCase (Don't use underscore or a score). -- Capiltilize acrnyms (HTTP,URL).
* As short as reasonable. --Longer names for longer lives.

**Type coversions**

* DestinationType(variable)
* Use `strconv` package for strings


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