In Go, you can use the range keyword to iterate over an array with index. Here's an example:
package main
import "fmt"
func main() {
arr := []string{"apple", "banana", "cherry"}
for i, val := range arr {
fmt.Printf("Index: %d, Value: %s\n", i, val)
}
}
In this example, we have an array of strings arr containing three fruits. We use the range keyword in the for loop to iterate over the arr array. The range keyword returns two values - the index and the value at that index. We store these values in i and val respectively.
Inside the for loop, we print the index and value using the Printf function. The %d and %s are format specifiers for integers and strings respectively.
When we run this program, we get the following output:
Index: 0, Value: apple
Index: 1, Value: banana
Index: 2, Value: cherry