mirror of
https://github.com/riba2534/TCP-IP-NetworkNote.git
synced 2026-02-04 02:23:21 +08:00
22 lines
377 B
C
22 lines
377 B
C
#include <stdio.h>
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#include <fcntl.h>
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#define BUF_SIZE 3
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int main(int argc, char *argv[])
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{
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int fd1, fd2;
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int len;
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char buf[BUF_SIZE];
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fd1 = open("news.txt", O_RDONLY);
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fd2 = open("cpy.txt", O_WRONLY | O_CREAT | O_TRUNC);
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while ((len = read(fd1, buf, sizeof(buf))) > 0)
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write(fd2, buf, len);
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close(fd1);
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close(fd2);
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return 0;
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}
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