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Sunday, February 14, 2010

Write a C Program to Find out the Last Date of Modification.

Answer:
#include
#include
#include
void main()
{
struct stat status;
FILE *fp;
fp=fopen("test.txt","r");
fstat(fileno(fp),&status);
clrscr();
printf("Last date of modification : %s",ctime(&status.st_ctime));
getch();
}
Explanation:
Function int fstat(char *, struct stat *) store the information of open file in form of structure struct stat
Structure struct stat has been defined in sys\stat.h as
struct stat {
short st_dev, st_ino;
short st_mode, st_nlink;
int st_uid, st_gid;
short st_rdev;
long st_size, st_atime;
long st_mtime, st_ctime;
};
Here
(e)st_dev: It describe file has stored in which drive of your computer.
(f)st_mode: It describes various modes of file like file is read only, write only, folder, character file etc.
(g)st_size: It tells the size of file in byte.
(h)st_ctime:It tells last data of modification of the file in date format.
Function ctime convert date type in string format

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