...erators(输入迭代器)只能向前移动每次只能移动一步只能读它们指向东西而且只能读一次它们以一个输入文件中 read pointer(读指针)为原型;C++ 库中 istream_iterators 就这一种类典型代表output iterators(输出迭代器)与此类似只不过用于输出：它们只能向前移动...
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读指针处理 work off
空指针阅读 Null Pointer Read
非法指针阅读 Invalid pointer Read
从文件指针中读取一行 fgets
从文件指针中读取字符 fgetc
指针总读数 TIR
返回文件指针读 ftell
移动文件读写指针 lseek
然后就可以使用这个返回的指针来配置这个虚拟文件的其他参数，例如在对该文件执行读操作时应该调用的函数。
You can then use the return pointer to configure other aspects of the virtual file, such as the function to call when a read is performed on the file.
如果多次读或写操作时都遇到无效指针，则内存可能已损坏。
If several read or write operations have occurred through bad Pointers, memory may be corrupted.
一群领导0意味着你想读一个偏移量从一个空指针。
A bunch of leading 0s means that you're trying to read at an offset from a null pointer.
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