2024年9月17日 · The C fread() is a standard library function used to read the given amount of data from a file stream. Defined inside <stdio.h>, the fread() function reads the given number of elements of specific size from the file stream and stores it in the buffer memory.

Following is the C library syntax of the fread () function −. This function accepts three parameters −. ptr: A pointer to a block of memory where the read data will be stored. size: The size, in bytes, of each element to be read. nmemb: The number of elements, each of size bytes, to be read.

2023年5月9日 · Reads up to count objects into the array buffer from the given input stream stream as if by calling fgetc size times for each object, and storing the results, in the order obtained, into the successive positions of buffer, which is …

Reads an array of count elements, each one with a size of size bytes, from the stream and stores them in the block of memory specified by ptr. The position indicator of the stream is advanced by the total amount of bytes read. The total amount of bytes read if successful is (size*count).

fread returns the number of full items the function read, which may be less than count if an error occurs, or if it encounters the end of the file before reaching count. Use the feof or ferror function to distinguish a read error from an end-of-file condition.

In this tutorial, you'll learn how to use the C fread() function to read data from a file into the memory.

2020年7月27日 · The fread() function is the complementary of fwrite() function. fread() function is commonly used to read binary data. It accepts the same arguments as fwrite() function does. The syntax of fread() function is as follows: Syntax: size_t …

The fread() function reads data from a file and writes into a block of memory. The fread() function is defined in the <stdio.h> header file.

2011年12月21日 · The fread() function shall read into the array pointed to by ptr up to nitems elements whose size is specified by size in bytes, from the stream pointed to by stream. For each object, size calls shall be made to the fgetc() function and the results stored , in the order read, in an array of unsigned char exactly overlaying the object.

The fread() function in C reads a block of data from a given stream into a specified memory block. It is commonly used for reading binary data from files, allowing you to specify both the size of each element and the number of elements to read.