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Input and output with files C++ provides the following classes to perform output and input of characters to/from files: ofstream: Stream class to writ 阅读全文
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Class Classes are an expanded concept of data structures: like data structures, they can contain data members, but they can also contain functions as 阅读全文
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Dynamic memory In the programs seen in previous chapters, all memory needs were determined before program execution by defining the variables needed. 阅读全文
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Character sequences The string class has been briefly introduced in an earlier chapter. It is a very powerful class to handle and manipulate strings o 阅读全文
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C++的函数一般是由返回类型,参数和语句组合而成;模板的出现是为了决解同样的操作在不同类型数据之间具有通用性。 Functions Functions allow to structure programs in segments of code to perform individual task 阅读全文
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Basic Input/Output The example programs of the previous sections provided little interaction with the user, if any at all. They simply printed simple 阅读全文
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Constants Constants are expressions with a fixed value. Literals Literals are the most obvious kind of constants. They are used to express particular 阅读全文