函数设置文件指针finput的位置到从文件尾开始倒数第0个自己的位置（也就是文件尾）
int fseek( std::FILE* stream, long offset, int origin ); 设置文件流的文件位置指示符。stream... 如果stream是以二进制模式打开的,新位置正好是offset从文件开头测量的字节数origin是SEEK_SET,则从当前文件位置返回origin是SEEK_CUR,并且从文件的末尾开始,如果origin是SEEK_END不需要二进制流来支持...
(inputFile,0,SEEK_END); source_buf=calloc(1,1+sizeofFile); /* now check rc */fprintf(stderr, "Size of the file=%d;freadre 浏览6提问于2012-03-31得票数 0 6回答 使用C++以二进制模式读取整个文件 、 我正在尝试使用可视c++以二进制模式读取整个jpg文件。代码如下:if(fd == NULL) { ret...
The whence parameter specifies the reference point for the offset. It can take values like SEEK_SET, SEEK_CUR, or SEEK_END, determining whether the offset is calculated from the beginning, current position, or end of the file, respectively. 5. What is the return type of the fseek() funct...
SEEK_SET 文件开头 SEEK_CUR 文件指针的当前位置 SEEK_END end of file 如果成功,那么即使 origin 为SEEK_END , fseek () 函数也会清除 EOF 指示符,并取消任何先前的 ungetc () 或 ungetwc () 函数对同一流的影响。 如果对 fseek () 函数或 fsetpos () 函数的调用无效,那么会将该调用视为清空,并废弃...
文件开头 SEEK_SET 0 当前位置 SEEK_CUR 1 文件末尾 SEEK_END 2 例如,把位置指针移动到离文件开头100个字节处: 1 fseek(fp, 100, 0); 值得说明的是,fseek() 一般用于二进制文件,在文本文件中由于要进行转换,计算的位置有时会出错。 文件的随机读写 在移动位置指针之后,就可以用前面介绍的任何一种读写...
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End of file Data Types:double|char|string Tips If a file hasnbytes of data, then thosenbytes are in positions0throughn-1. Alternatives To move to the beginning of a file, call frewind(fileID) This call is identical to fseek(fileID, 0, 'bof') ...
SEEK_END End of file. This function changes the current file position associated withstreamto a new location in the file. The next operation on the stream takes place at the new location. On a stream open for update, the next operation can be either a reading or a writing operation. ...
SEEK_SETBeginning of file. You can usefseekand_fseeki64to reposition the pointer anywhere in a file. The pointer can also be positioned beyond the end of the file.fseekand_fseeki64clears the end-of-file indicator and negates the effect of any priorungetccalls againststream. ...