How can we know whether a file is read or not

[Archie7891]

how can we know whether a particular file is read or not using c programming.

for an example:

the file name = abcd.txt

the status of the file should be 0 if the person has not opened it and it should be changed to 1 after any one reads it

how can we do this

[Chandra3993]

Straight way you can not check the file is read or not.
For specific number of days or epoch seconds you can check

Here I have written the program for checking file is read in last 2 days

<br /> #include <br /> #include <br /> #include <br /> #include<br /> #include<br /> <br /> main()<br /> {<br /> struct stat but ;<br /> // Here you need to give the file name with absolute path.<br /> stat("/home/pavunkumar/secrect",&amp;but );<br /> // Here I have calculated the one day epoch time.<br /> int limit = 24*60*60;<br /> // Getting the last read time of the file.<br /> int read = but.st_atime ;<br /> int current ;<br /> // Getting the current epoch time.<br /> current=time ( NULL ) ;<br /> // Check file is not open for 2 days.<br /> if (((current-read)/limit) &gt;= 2 )<br /> {<br /> printf ( "file is not read ");<br /> }<br /> else<br /> {<br /> printf ( "file is read " ) ;<br /> }<br /> }<br /> <br />

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<br /> #include <br /> #include <br /> #include <br /> #include<br /> #include<br /> <br /> main()<br /> {<br /> struct stat  but ;<br /> //  Here you need to give the file name with absolute path.<br /> stat("/home/pavunkumar/secrect",&amp;but );<br /> //  Here I have calculated the one day epoch time.<br /> int limit = 24*60*60;<br /> // Getting the last read time of the file.<br /> int read = but.st_atime  ;<br /> int current ;<br /> // Getting the current epoch time.<br /> current=time ( NULL ) ;<br /> // Check  file is not open for 2 days.<br /> if (((current-read)/limit) &gt;= 2 )<br /> {<br /> printf ( "file is not  read ");<br /> }<br /> else<br /> {<br /> printf ( "file is  read " ) ;<br /> }<br /> }<br /> <br />

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