fseek() function in CPrototype:int feek(FILE *stream, long int offset, int origin); Parameters:FILE *stream, long int offset, int origin Return type: intUse of function:The fseek() function is used to set the file indicator pointer to the associate with the file stream according to the...
Thefseek() functionin the C language allows programmers to set the file pointer to a given offset inside afile, making it an essential tool forfile manipulation. Developers may perform various tasks, includingrandom access, adding data, editing existing material,andreading particular file sections, ...
fseek 函数 in C 编程语言 介绍 fseek() 函数用于设置文件指针位置。它是 C 编程语言中的标准 I/O 函数。使用 fseek() 函数可以移动文件指针到文件中的特定位置,并从该位置开始读取或写入数据。 语法 下面是 fseek() 函数的语法: int fseek(FILE *stream, long offset, int whence); stream:文件指针。
fseek 函数的作用是 以 int fromwhere 参数为基准 , 偏移 long offset 个字节 , 该偏移可以是正数 , 也可以是负数 ; 这里特别注意 , 如果要精准的生成 100 字节大小的文件 , 需要从开始位置偏移 99 字节 , 然后指针指向第 100 字节的位置 , 此时写入一个字节 , 写入的这个字节就是第 100 字节数...
The syntax for the fseek function in the C Language is:int fseek(FILE *stream, long int offset, int whence);Parameters or Argumentsstream The stream whose file position indicator is to be modified. offset The offset to use (in bytes) when determining the new file position. whence It can ...
Name fseek function — Changes file position Synopsis int fseek(FILE* stream, long int offset, int origin) The fseek function seeks to a different position in stream. The origin … - Selection from C++ In a Nutshell [Book]
If the file cannot be found, the user-defined function returns –1.Copy FUNCTION fsize2 PARAMETERS gcFileName && File to be checked PRIVATE pnHandle,pnSize IF PARAMETERS( ) = 0 RETURN -2 && Return -2 if no parameter passed ELSE IF !FILE(gcFileName) RETURN -1 && Return -1 if ...
C/C++ fseek()用法及代码示例 fseek() 用于将与给定文件关联的文件指针移动到特定位置。 用法: intfseek(FILE *pointer, long int offset, int position)pointer:pointer to a FILE object that identifies the stream.offset:number of bytes to offset from positionposition:position from where offset is added...
Thefseek,fseeko, andfseeko64function allows the file-position indicator to be set beyond the end of existing data in the file. If data is written later at this point, subsequent reads of data in the gap will return bytes of the value 0 until data is actually written into the gap. ...
If successful in moving the pointer, the fseek() function returns 0. If unsuccessful, or on devices that cannot seek, such as terminals and printers, the fseek() function returns nonzero. Special behavior forXPG4.2:If unsuccessful, the fseek() function returns -1 and sets errno to one of...