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C file Last Modified Date


This section demonstrates you to find the last modified date of file in C. 

You can see in the given example that we want to get the last modified date of the specified file Hello.txt. For this, we have defined the library function strftime() provided by the header file <time.h> that formats the time represented in the structure according to the formatting rules defined in format and stored into t. The characters stored in t can not exceed the defined max size of characters. Function localtime(&b.st_mt0ime) determines the last modified date and time.

We have used some conversion characters begins with % sign and they are followed by another character which defines a special value to replace, like %d displays the day of the month (01-31), %m displays the month of the year (01-12),%Y displays the year, %H displays the hour of the day, %M displays the minute of the hour and %S displays the seconds of the minute.

Here is the code:


#include <time.h>
#include <stdio.h>
#include <conio.h>
#include <sys/types.h>
#include <sys/stat.h>
void main() {
  char file[] "c:\\Hello.txt";
  char t100 "";
  struct stat b;
  if (!stat(file, &b)) {
    strftime(t, 100"%d/%m/%Y %H:%M:%S", localtime&b.st_mtime));
    printf("\nLast modified date and time = %s\n", t);
  else {
    printf("Cannot display the time.\n");

Output will be displayed as:

Download Source Code:


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