change functions example (#21190)
just by calling function won't print out the result and since the input name is Chinese and the output should also be chinese.
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## 功能
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## 功能
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Swift中的函数由参数和返回类型组成。可以使用以下基本结构创建函数: \`\`\`斯威夫特 func sayHello(nameOfPerson:String) - > String { let hello =“Hello,”+ nameOfPerson +“。” 打印(你好) }
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Swift中的函数由参数和返回类型组成。可以使用以下基本结构创建函数: \`\`\`斯威夫特 func sayHello(nameOfPerson:String) - > String { let hello =“Hello,”+ nameOfPerson +“。” return hello }
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sayHello(nameOfPerson:“史蒂夫”) ` `` In this example, the function sayHello takes in a string name and prints out the phrase` “Hello,Steve。”。
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运行函数: print(sayHello (nameOfPerson:“史蒂夫”)) ` `` In this example, the function sayHello takes in a string name and prints out the phrase` 输出结果是: “Hello,史蒂夫。”。
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## 功能参数
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## 功能参数
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