main.go 源码
// Copyright © 2018 Inanc Gumus
// Learn Go Programming Course
// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
//
// For more tutorials : https://learngoprogramming.com
// In-person training : https://www.linkedin.com/in/inancgumus/
// Follow me on twitter: https://twitter.com/inancgumus
package main
// ---------------------------------------------------------
// EXERCISE: Currency Converter
//
// In this exercise, you're going to display currency exchange ratios
// against USD.
//
// 1. Declare a few constants with iota. They're going to be the keys
// of the array.
//
// 2. Create an array that contains the conversion ratios.
//
// You should use keyed elements and the contants you've declared before.
//
// 3. Get the USD amount to be converted from the command line.
//
// 4. Handle the error cases for missing or invalid input.
//
// 5. Print the exchange ratios.
//
// EXPECTED OUTPUT
// go run main.go
// Please provide the amount to be converted.
//
// go run main.go invalid
// Invalid amount. It should be a number.
//
// go run main.go 10.5
// 10.50 USD is 9.24 EUR
// 10.50 USD is 8.19 GBP
// 10.50 USD is 1186.71 JPY
//
// go run main.go 1
// 1.00 USD is 0.88 EUR
// 1.00 USD is 0.78 GBP
// 1.00 USD is 113.02 JPY
// ---------------------------------------------------------
func main() {
}
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