Fgets (read a string from the file)Related functions: open, fread, fscanf, GETCHeader file include Define the function char * fgets (char * s, int size, file * stream );Function Description: fgets () is used to read characters from the file referred
Transferred from: http://blog.csdn.net/xiaofei0859/article/details/51145051Both are working on the file, so what's the difference between the two, and how do you choose when you use it?1. Differences
The fread is buffered and read without
Differences between fopen and open
In UNIX, C has two sets of reading and writing binary stream files: 1) fopen, fread, fwrite; 2) Open, read, writeHere is a brief introduction of their differences.1. The fopen series are standard C library
Linux Read/write Fread/fwrite The difference between the twoThe 1,fread is buffered and read without buffering.2,fopen is defined in standard C, and open is defined in POSIX.3,fread can read a structure. Read in Linux/unix There is no difference
fwrite function1. function functionUsed to read and write a data block.2. General Invocation FormFwrite (BUFFER,SIZE,COUNT,FP);3. Description(1) Buffer: is a pointer to Fread, which is the storage address of the read-in data. For Fwrite, the address
Today, when writing Unicode files with fwrite, there is a problem with the code as follows _wfopen_s(&fp,L"out.txt",L"w+"); if (fp) { //写入unicode文件头 const char*utf16head"\xFF\xFE"; fwrite21,fp); //fwrite(line.c_str()
The 1,fread is buffered with read without buffering.
2,fopen is defined in standard C, and open is defined in POSIX.
3,fread can read a structure. Read the binary in Linux/unix is no different from normal files.
4,fopen cannot specify permissions to
1. fopen
FILE * fopen (const char * path,const char * mode); function Description
The parameter path string contains the file path and filename you want to open, and the parameter mode string represents the flow pattern.
Mode has the following
Differences between open/read/write and fopen/fread/fwrite
Open: system call. The returned file descriptor, that is, the file handle, is the index of the file in the file description table.
Fopen: a c language library function that returns a
Linux fread and fwrite 1. The function is used to read and write a data block. 2. the call method is fread (buffer, size, count, fp), fwrite (buffer, size, count, fp), and 3. description (1) buffer: A pointer. For fread, It is the storage address
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