#include
#include
#include
int main(void)
{
int fd1, fd2;
fd1 = open(“file_101.c”, O_RDONLY);
fd2 = open(“file_201.c”, O_RDWR);
printf(“fd1 = %d\n”, fd1);
printf(“fd2 = %d\n”, fd2);
close(fd1);
fd1 = open(“file_201.c”, O_WRONLY);
printf(“fd1 = %d\n”, fd1);
close(fd1);
close(fd2);
return 0;
}