I have a problem and I’m confused about how to solve it.
I have this task:
1. Store the result of the division in the int which a points to.
2. Store the remainder of the division in the int which b points to.
My code is:
package main
import "fmt"
func Function(a *int, b *int) {
*a = *a / *b
*b = *a % *b
}
func main() {
a := 13
b := 2
Function(&a, &b)
fmt.Println(a)
fmt.Println(b)
}
The output should be 6 and 1, however, I don’t know how to write the code in the Function func the way it would store the results properly. How do I fix my code? Function should divide the dereferenced value of a by the dereferenced value of b.
>Solution :
The function clobbers the value of *a before the value is used in the second statement. Use this code:
func Function(a *int, b *int) {
*a, *b = *a / *b, *a % *b
}
The expressions on the right hand side of the = are evaluated before assignments to the variables on the left hand side.
Another option is to assign *a / *b to a temporary value:
func Function(a *int, b *int) {
t := *a / *b
*b = *a % *b
*a = t
}