How does fread know when the file is over in C?

Question

So I\'m not entirely sure how to use fread. I have a binary file in little-endian that I need to convert to big-endian, and I don\'t know how to read the file. Here is what

Answer 1

FILE* file = fopen(filename, "rb");
char buffer[4];

if (!file) {
/* File was opened successfully. */

/* Attempt to read */
while (fread(buffer, 1, 4, file) != EOF) {
    /* byte swap here */
}

fclose(file);
}