Commands Line Arguments

Today , i will demonstrate how to check command line arguments in GoLang. First of all , you have to answer , why gophers follow gofmt ? You can answer this question below.


package main
import (
              "fmt"
               "os"
)

func main(){
              fmt.Println("command args :" , os.Args[0:])
}

import "os"
              os is most powerful library in go or you can say a core of go. All the low level operation require os library , such as process Id, chown, mkdir, get environment path or set , threads etc. Concurrency also achieved through os libraries . Upcoming post concurrency discuss in detail. https://www.golang-book.com/books/intro/10
os.Args[0:]
              args[0:] slice the array length . Slicing array length or capacity.  Just to remember, that in case of slice is that how much length programmer want to access.
                Examples: 
                 C program we, write this
                        int arr[] ={0,2,3,1,4}
                        int i =0;
                        for (; i < sizeof(arr/2); i++) {
                             // code
                        }
                but in Go
                         int arr[] = {0,2,3,1,4}
                         fmt.println("slice", arr[2:])
                         // easy and simple
                https://tour.golang.org/moretypes/11

Good Practice 

 Now the answer time , because gofmt is not optional , as a programmer you must format properly :)