38 lines
617 B
Go
38 lines
617 B
Go
package main
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import (
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"fmt"
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"os"
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"strconv"
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)
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func main() {
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const (
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EUR = iota
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GBP
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JPY
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)
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rates := [...]float64{
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EUR: 0.88,
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GBP: 0.78,
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JPY: 113.02,
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}
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args := os.Args[1:]
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if len(args) != 1 {
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fmt.Println("Please provide the amount to be converted.")
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return
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}
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amount, err := strconv.ParseFloat(args[0], 64)
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if err != nil {
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fmt.Println("Invalid amount. It should be a number.")
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return
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}
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fmt.Printf("%.2f USD is %.2f EUR\n", amount, rates[EUR]*amount)
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fmt.Printf("%.2f USD is %.2f GBP\n", amount, rates[GBP]*amount)
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fmt.Printf("%.2f USD is %.2f JPY\n", amount, rates[JPY]*amount)
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}
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