hello world of multilanguage

Hello World 各种编程语言的开始！
今天就来介绍一下，各种版本的hello world

1.c
printf("hello world");

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2.java
System.out.println("hello world");

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3.c#
Console.WriteLine("hello world");

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4.python
print("hello world")

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5.go
fmt.Println("hello world")

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6.JavaScript
console.log("hello world");

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7.Ruby
print "hello world"

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