C 库函数 - fread() - 菜鸟教程
网页C 库函数 size_t fread(void *ptr, size_t size, size_t nmemb, FILE *stream) 从给定流 stream 读取数据到 ptr 所指向的数组中。 声明 下面是 fread() 函数的声明。
fread - cppreference.com
网页2023年5月9日 · fread. 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 …
C fread() Function - GeeksforGeeks
网页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.
【C 语言】文件操作 ( fread 函数 )_fread循环读取一个文件-CSDN …
网页在 C 语言中，可以使用 fread 函数来读取二进制文件中的数据。如果要读取结构体，可以先定义一个结构体类型，然后使用 fread 函数将数据读入到该结构体变量中。
fread(3) — Linux manual page - man7.org
网页The function fread() reads nmemb items of data, each size bytes long, from the stream pointed to by stream, storing them at the location given by ptr. The function fwrite() writes nmemb items of data, each size bytes long, to the stream pointed to by stream, obtaining them from the location given by ptr.
C Library - fread() function - Online Tutorials Library
网页Syntax. Following is the C library syntax of the fread () function −. size_t fread(void * ptr, size_t size, size_t nmemb, FILE * stream); Parameters. 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.
std::fread - cppreference.com
网页2023年10月2日 · std:: fread. Reads up to count objects into the array buffer from the given input stream stream as if by calling std::fgetc size times for each object, and storing the results, in the order obtained, into the successive positions of buffer, which is reinterpreted as an array of unsignedchar.
fread | Microsoft Learn
网页fread 返回函数读取的完整项数；如果发生错误，如果在到达 count 之前遇到文件的末尾，则该数字可能小于 count。 使用 feof 或 ferror 函数将读取错误与文件结尾条件区分开来。
An Essential Guide to C fread() Function by Practical Examples
网页The fread() function returns a number of elements that it successfully reads from the file. It’s equivalent to the count. If the return value is less than count, there are two possible scenarios: The function encounters the end-of-file. Or an error occurred while reading the file. If either size or count is zero, the fread() function returns ...
C - fread [zh] - Runebook.dev
网页fread. 从给定输入流 stream 读取最多 count 对象到数组 buffer 中，就好像通过为每个对象调用 fgetc size 次，并将结果按获得的顺序存储到 buffer 的连续位置中，该位置被重新解释为数组 unsigned char 。 流的文件位置指示器按读取的字符数前进。 如果发生错误，则流的文件位置指示符的结果值是不确定的。 如果读取部分元素，则其值是不确定的。 Parameters. Return value. 成功读取的对象数量，如果发生错误或文件结束情况，该数量可能小于 …