for loop

Golang has no other looping option more then for loop like other programming languages.

FOR LOOP

package main

import "fmt"

func main() {
        // first part initialization i:=0 second part condition i<3 third part incrementation i=i+1
	for i := 0; i < 3; i++ {
		fmt.Println(i)
	}
//scope of "i" is limited to the loop. That's why this bellow does not work 
// fmt.Println(i) 
}

USAGE AS A WHILE LOOP

package main

import "fmt"

func main() {
	i := 1
	//
	for i < 3 {
		// i is in first time is 1
		// make some multiplication i = i*2
		i *= 2
	}
	fmt.Println(i) // output 4 (1*2*2)
}

INFINITE LOOP

package main

import "fmt"

func main() {
	i := 1
	//
	for  {
                //actually there is no limitation so loops infinite 
		i++ // incrementation same as i = i+1 
                // we can brake loop using a condition like below 
                if i == 3{
                         brake  // when i is 3 brake the loop                
                         }
	}
	fmt.Println(i) // output 3 
}

CONTINUE

package main

import "fmt"

func main() {
	for i := 0; i <= 10; i++ {
		//if i is a odd number continue "jump"
		if i%2 != 0 {
		continue
		}
		fmt.Println(i)
	}

}

FOR EACH IN RANGE LOOP

package main

import "fmt"

func main() {
        // Array with 3 elements STRING 
	myArray := [3]string{"this is index zero", "this is index one ", "this is index three"}
	// i for index v for value of array in range of myArray 
        for i, v := range myArray {
                // print index and value 
		fmt.Println(i, v)
	}

}