fibonacci.go

package main

import (
  "fmt"
)

func main() {
  var nth int

  // Print our request to the user
  fmt.Println("Enter Fibonacci number you require?")

  // Request an number from the user and store it
  // in the nth variable
  fmt.Scanf("%d", &nth)

  // Define our starting point
  var lastNumber int = 0
  var currentNumber int = 1

  // Define a temporary store of the value for
  // when we are shifting along the sequence
  var nextNumber int = 0

  // Loop starting at 1 through each of the fibonacci
  // numbers until we find the one we want
  for i := 1; i < nth; i++ {
    nextNumber = lastNumber + currentNumber
    lastNumber = currentNumber
    currentNumber = nextNumber
  }

  // Output the fibonacci number we want
  fmt.Println(currentNumber)
}