0L,SEEK_END);/* go to end of file */last=ftell(fp);for(count=1L;count<=last;count++){...
}PositionInformation.CurrentByteOffset.QuadPart=StandardInformation.EndOfFile.QuadPart+DistanceToMove.Qua...
(void) { FILE *stream; int result; if (stream = fopen("myfile.dat", "r")) { /* successful */ if (fseek(stream, 0L, SEEK_SET)); /* moves pointer to */ /* the beginning of the file */ { /* if not equal to 0 then error ... */ } else { /* fseek() successful *...
a+:Open for reading and appending (writing at end of file). The file is created if it does not exist. The initial file position for reading is at the beginning of the file, but output is always appended to the end of the file. 上述对a与a+模式的描述大致内容是:打开一个文件,如果该文...
a+:Open for reading and appending (writing at end of file). The file is created if it does not exist. The initial file position for reading is at the beginning of the file, but output is always appended to the end of the file. ...
SEEK_END - 设定位置为文件尾加上 offset。返回值 成功则返回 0；否则返回 -1。注意移动到 EOF 之后的位置不算错误。范例 Example #1 fseek() 例子 <?php fp = fopen('somefile.txt', 'r');// read some data data = fgets($fp, 4096);// move back to the beginning of the file ...
( stream, "The fseek begins here: " "This is the file 'fseek.out'.\n" ); result = fseek( stream, 23L, SEEK_SET); if( result ) perror( "Fseek failed" ); else { printf( "File pointer is set to middle of first line.\n" ); fgets( line, 80, stream ); printf( "%s", ...
*/ virtual int MFGetc() = 0; // int fgetpos...which is a pointer to an fpos_t object whose value shall have been previously obtained by a call to fgetpos...其实现也很简单——只是简单的转发,通过这层class,我们将“下”和“载”进行了解耦。 2.5K20 CC++学习记录--标准库头文件stdio....
3、SEEK_END - 设定位置为文件尾加上 offset。 header("Content-Type:Text/html;charset=utf8"); $fp = fopen('d:\test\test.txt','r');//readsome data $data = fgets($fp,4096);//move back to the beginning of the file // same as rewind($fp); ...
int fseek( FILE *stream, long offset, int origin );第一个参数stream为文件指针,offset为偏移,比如你要从文件的第10000个字节开始读取的话,offset就应该为10000,origin 为标志是从文件开始还是末尾。origin 的取值:SEEK_CUR Current position of file pointerSEEK_END End of fileSEEK_SET Beginning of file...