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
// ---------------------------------------------------------
// STORY
// You want to write a program that will manipulate a
// given string to uppercase, lowercase, and title case.
//
// EXERCISE: String Manipulator
//
// 1. Get the operation as the first argument.
//
// 2. Get the string to be manipulated as the 2nd argument.
//
// HINT
// You can find the manipulation functions in the strings
// package Go documentation (ToLower, ToUpper, Title).
//
// EXPECTED OUTPUT
//
// go run main.go
// [command] [string]
//
// Available commands: lower, upper and title
//
// go run main.go lower 'OMG!'
// omg!
//
// go run main.go upper 'omg!'
// OMG!
//
// go run main.go title "mr. charles darwin"
// Mr. Charles Darwin
//
// go run main.go genius "mr. charles darwin"
// Unknown command: "genius"
// ---------------------------------------------------------
func main() {
}
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