1.1, / FILE, , , Windows HANDLE, 1.2.
1.1. C:
/* 1. cp. , . */
/* cp 1 2: 1 2. */
#include <stdio.h>
#include <errno.h>
#define BUF_SIZE 256
int main(int argc, char *argv[]) {
FILE *in_file, *out_file;
char rec [BUF_SIZE];
size_t bytes_in, bytes_out;
if (argc!= 3) {
printf(": 1 2\n");
return 1;
}
in_file = fopen(argv [1], "rb");
if (in_file == NULL) {
perror(argv[1]);
return 2;
}
out_file = fopen(argv [2], "wb");
if (out_file == NULL) {
perror(argv [2]);
return 3;
}
/* . */
while ((bytes_in = fread(rec, 1, BUF_SIZE, in_file)) > 0) {
bytes_out = fwrite(rec, 1, bytes_in, out_file);
if (bytes_out!= bytes_in) {
perror(" .");
return 4;
}
}
fclose (in_file);
fclose (out_file);
return 0;
}
, Windows.
1. FILE ( UNIX ). NULL . , .
2. fopen , . , , , . , Windows, / , , . .
3. perror, , , , fopen, errno. ferror, , , FILE.
4. fread fwrite , , . , .
5. fclose FILE ( UNIX).
|
|
|
6. / , , /.
7. / printf, Windows-.
, , UNIX, Windows, , ANSI . , , , , , / , . , /, Windows ( 7).
UNIX, , , , ( fseek , , fsetpos fgetpos), / , . , Visual C++ , , , . , .
, , / , , , Windows, .
