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ggubuk97 edited this page Oct 17, 2015
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3 revisions
https://github.com/ggubuk97/apue/blob/master/ch5/ex5.14.c
line 13
| address | 0 | 1 | 2 | 3 | ... | 43 | 44 | 45 | 46 | 47 |
| value | a | a | a | a | ... | a | a | a | \0 | 'X'|
line 14 (w+ mode truncate value to 0, fp goes to 0)
fp
| address | 0 | 1 | 2 | 3 | ... | 43 | 44 | 45 | 46 | 47 |
| value | a | a | a | a | ... | 0 | 0 | 0 | 0 | 0 |
line 19 (after flush, note that fp is 12)
fp
| address | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | ... | 11 | 12 | 13 | ... | 47 |
| value | h | e | l | l | o | , | | w | o | ... | d | \0 | 0 | ... | 0 |
line 25 (fp is still 12)
fp
| address | 0 | 1 | 2 | 3 | ... | 12 | 13 | 14 | 15 | ... | 46 | 47 |
| value | b | b | b | b | ... | b | b | b | b | ... | \0 | 'X'|
line 27 ("hello, world" is attached at fp which means address 12, then seek makes fp opsition 0)
fp
| address | 0 | 1 | 2 | 3 | ... | 12 | 13 | 14 | 15 | ... | 22 | 23 | 24 |...| 46 | 47 |
| value | b | b | b | b | ... | h | e | l | l | ... | d | \0 | b |...| b | 'X'|
line 33
fp
| address | 0 | 1 | 2 | 3 | ... | 44 | 45 | 46 | 47 |
| value | c | c | c | c | ... | c | c | \0 | 'X'|
line 35
| address | 0 | 1 | 2 | 3 | ... | 11 | 12 | ... | 45 | 46 | 47 |
| value | h | e | l | l | ... | d | c | ... | c | \0 | 'X'|