#include

<

stdio.h

>

#include

<

stdlib.h

>

#include

<

unistd.h

>

int

main(

int

argc,

char

*

argv[])

{

FILE

*

fp;

char

ch;

fp

=

fopen(

"

test

"

,

"

r

"

);

//

fopen产生一个文件指针

while

((ch

=

fgetc(fp))

!=

EOF)

//

以文件流方式读取文件,以EOF结尾

{

sleep(

1

);

putc(ch,stdout);

fflush(stdout);

//

刷新缓冲区,让输出显示

}

fclose(fp);

return

0

;

}

程序2:

#include

<

stdio.h

>

#include

<

stdlib.h

>

#include

<

unistd.h

>

#include

<

fcntl.h

>

int

main(

int

argc,

char

*

argv[])

{

char

ch[

10

];

int

fd;

fd

=

open(

"

./test

"

,O_RDONLY);

while

(read(fd,ch,

1

)

!=

0

)

{

sleep(

1

);

write(

1

,ch,

1

);

//

fflush(stdout);

}

close(fd);

return

0

;

}