40 lines
641 B
Go
40 lines
641 B
Go
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// For more tutorials: https://blog.learngoprogramming.com
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//
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// Copyright © 2018 Inanc Gumus
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// Learn Go Programming Course
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// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
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//
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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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if len(os.Args) < 3 {
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fmt.Println("gimme two numbers")
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return
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}
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min, err1 := strconv.Atoi(os.Args[1])
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max, err2 := strconv.Atoi(os.Args[2])
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if err1 != nil || err2 != nil || min >= max {
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fmt.Println("wrong numbers")
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return
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}
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var sum int
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for i := min; i <= max; i++ {
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sum += i
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fmt.Print(i)
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if i != max {
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fmt.Print(" + ")
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}
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}
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fmt.Printf(" = %d\n", sum)
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}
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