ID Number: Q49872
5.10 6.00 6.00a 6.00ax | 5.10 6.00 6.00a
MS-DOS | OS/2
Summary:
In Microsoft C versions 5.1, 6.0, 6.0a, and 6.0ax, it is possible to
read more than 64K at a time with the fread() function by specifying
an item size greater than 1 and a count from 1 to 64K. The resulting
number of bytes read will be the product of size and count.
More Information:
The follow code demonstrates how to read a file 200K in length:
Sample Code
-----------
/* Compile options needed: /AH
*/
#include <stdio.h>
char huge buffer[205000];
void main(void)
{
FILE *fp;
fp=fopen("testfile.dat","r");
fread(buffer,4,51200,fp); /* 51200*4=204,800 */
/* The value returned from the line above will be the number of
items read. This number is limited to 64K because it is of
type size_t. But remember, the total number of bytes read is
equal to the number of items times the size of each item, which
is 4 bytes in this case. Therefore, the total bytes read
is 4 times 51200 or 204,800 bytes. */
}
Additional reference words: 5.10 6.00 6.00a 6.00ax