In Go, we can find the index of a specific element in an array using a for loop and the range keyword. Here is an example:
package main
import "fmt"
func main() {
// declaring an array
arr := [5]int{10,20,30,40,50}
// finding the index of 30
for index, value := range arr {
if value == 30 {
fmt.Printf("Index of 30 is: %d\n", index)
}
}
}
In this example, we have an array arr with 5 integer elements. We are then using a for loop and the range keyword to iterate over the elements of the array. Inside the for loop, we are checking if the current element (value) is equal to 30. If it is, we print out the index of that element using fmt.Printf function.
Output:
Index of 30 is: 2
This is because the index of 30 in the array is 2 (since array indexing starts at 0).