package main
import "fmt"
func main() {
	j,k := 5, 20  // initialize j and k
	fmt.Printf("j:%d  k:%d\n", j,k);
	k,j = j,k // swap j and k
	fmt.Printf("j:%d  k:%d\n", j,k);
	l, m := mul(j,k)  // call function and initialize l and m for return values
	fmt.Printf("l:%d   m:%f\n", l,m)
}

/**
* do something
* @param i an integer
* @param j an integer
* @return an integer and a float32
**/
func mul(i int, j int) (int, float32) { // return two values
	ii := i*j;
	jj := float32(i) / float32(j);  // casting
	return ii,jj
}