The next two arguments specify the size and number of the data items that need to be read from the given file. fread takes four arguments, the first of which is the void pointer to the location where the read bytes should be stored. Mind though, each mode string can include the letter b to explicitly specify binary file mode, which can be interpreted by some non-UNIX systems that treat text and binary files differently.Īfter the fopen returns the file pointer, we can call the fread function to read binary stream. The mode of the file specifies whether to open a file for reading, writing or appending. FILE* streams are retrieved by the fopen function, which takes the file path as the string constant and the mode to open them. Standard I/O functions operate on file pointers instead of file descriptors. The C standard library implements a user-buffered I/O along with a platform-independent solution to handle reading/writing binary file data. Use the fread Function to Read Binary File in Cįread is part of the C standard library input/output facilities, and it can be utilized to read binary data from regular files. This article will demonstrate multiple methods of how to read a binary file in C. Use the read Function to Read Binary File in C.
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