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21 lines
318 B
21 lines
318 B
package main |
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import ( |
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"fmt" |
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"os" |
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"unicode" |
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) |
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func main() { |
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if len(os.Args) == 2 { |
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runes := []rune(os.Args[1]) |
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for i, r := range runes { |
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if unicode.IsLower(r) { |
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runes[i] = unicode.ToUpper(r) |
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} else if unicode.IsUpper(r) { |
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runes[i] = unicode.ToLower(r) |
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} |
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} |
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fmt.Println(string(runes)) |
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} |
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}
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