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This article mainly explains "how to use fread function in C language". The content of the explanation in this article is simple and clear, and it is easy to learn and understand. Please follow the editor's train of thought to study and learn "how to use fread function in C language".

1. The C language fread function is used to read the data in the file into the specified buffer.

2. The fread function does not distinguish between the tail of the file and the error, so the caller must use feof and ferror to determine what happened.

If an error or reaches the end of the file, the number of elements returned for successful reading may be less than nmemb.

Example

# include # include int main () {FILE * fp; char c [] = "www.codersrc.com"; char buffer [2048] = {0}; / * Open the file for reading and writing * / fp = fopen ("file.txt", "w +"); / * write data to the file * / fwrite (c, strlen (c) + 1, 1, fp) / * offset to the beginning of the file * / fseek (fp, 0, SEEK_SET); / * read and display data * / fread (buffer,1, strlen (c) + 1, fp); printf ("% s\ n", buffer); fclose (fp); return (0) Thank you for your reading. the above is the content of "how to use the fread function in C language". After the study of this article, I believe you have a deeper understanding of how to use the fread function in C language, and the specific use needs to be verified by practice. Here is, the editor will push for you more related knowledge points of the article, welcome to follow!

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