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一、 数据类型关键字1.基本数据类型(5个) void :声明函数无返回值或无参数,声明无类型指针,显式丢弃运算结果 char :字符型类型数据,属于整型数据的一种 int :整型数据,通常为编译器指定的机器字长 float :单精度浮点型数据,属于浮点数据的一种 double :双精度浮... 阅读全文
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scanf返回值的问题关于scanf的返回值,MSDN里是这样写的:Both scanf and wscanf return the number of fields successfully convertedand assigned; the return value does not incl... 阅读全文
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NAME tr - translate or delete charactersSYNOPSIS tr [OPTION]... SET1 [SET2]DESCRIPTION Translate, squeeze, and/or delete... 阅读全文
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NAME wc - print newline, word, and byte counts for each fileSYNOPSIS wc [OPTION]... [FILE]... wc [OPTION]... --files0-fr... 阅读全文
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NAME uniq - report or omit repeated linesSYNOPSIS uniq [OPTION]... [INPUT [OUTPUT]]DESCRIPTION Filter adjacent matching ... 阅读全文
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NAME sort - sort lines of text filesSYNOPSIS sort [OPTION]... [FILE]... sort [OPTION]... --files0-from=FDESCRIPTION ... 阅读全文
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NAME cut - remove sections from each line of filesSYNOPSIS cut OPTION... [FILE]...DESCRIPTION Print selected parts of li... 阅读全文
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NAME join - join lines of two files on a common field//连接两个文件中相同的字段SYNOPSIS join [OPTION]... FILE1 FILE2DESCRIPTION For ... 阅读全文