what's the difference between `fseek`, `lseek`, `seekg`, `seekp`?
2012年2月19日 · Use fseek when using the C stdio library. Use lseek when using low-level POSIX file descriptor I/O. The difference between the various seek functions is just the kind of …
How can I get a file's size in C? - Stack Overflow
fseek(f, 0, SEEK_END); // seek to end of file size = ftell(f); // get current file pointer fseek(f, 0, SEEK_SET); // seek back to beginning of file // proceed with allocating memory and reading …
c - fseek on a position beyond EOF does not trigger EOF using …
See here: fseek. The fseek() function shall allow the file-position indicator to be set beyond the end of existing data in the file. If data is later written at this point, subsequent reads of data in …
c - what is difference between fgetpos/fsetpos and ftell/fseek
2018年5月10日 · But get this: ONLY fseek() allows you to seek from the beginning of the file, from your current position in the file, and backwards from the end of the file (the third argument to …
c - Using fseek and ftell to determine the size of a file has a ...
2014年1月15日 · This relies on POSIX functionality (fstat) rather than plain C, and it's less reliable.For instance, if the "file" is /dev/sda1, fstat will show 0 size, but the fseek/ftell method …
c - Using fseek to backtrack - Stack Overflow
Some details become complicated, however, and fseeking is one of them. Because of this, the C standard only defines fseek in text files in a few cases: to the very beginning, to the very end, …
c - Whats the difference between this lseek, fseek, read, fread ...
2012年1月17日 · I also noticed that the standard input version was the one you said was working correctly. If you're having trouble with the FILE * version, I suspect the fopen() call is failing, so …
c - understanding usage of fseek - Stack Overflow
2012年1月18日 · need of fseek() in c. 2. unsure of fseek syntax in c. 0. I can't understand what a fseek parameter does. 0.
c - Use of fseek with stdout - Stack Overflow
2014年8月15日 · You can successfully use fseek on stdout if and only if stdout refers to a seekable stream.. If your program's standard output is going to a terminal or something similar …
c - Usage of fseek and feof - Stack Overflow
2014年2月21日 · fseek (fp, 0, SEEK_END); or feof(fp); Basically i just went till end of file and directly without printing the original contents of file and tried printing the reversed content of …