Programming

Hi,

Actually I want to create a log file in c, which should log the details in to log file.
Here am facing one problem..like if I am doing loging am not able to log the exact time..Its printing the same time..Can anybody help me out on this..??

Sample code:
===========
#include <stdio.h>
#include <time.h>
#include<stdlib.h>
struct tm *ptr;
time_t lt;

FILE * pFile = fopen("myfile.txt","a");
int main ()
{
int n;
char name [100];
lt = time(NULL);

fprintf(pFile,"\n==========starting===========\n");
for (n=0 ; n<2 ; n++)
{
puts ("please, enter a name: ");
gets (name);
printf("%s %d",__FILE__,__LINE__);
fprintf (pFile,"\nName %d [%-10.10s] : %s : Line %d: %s\n",n,name,__FILE__,__LINE__,asctime(localtime(&lt)));
}
fprintf(pFile,"Hello : %s : Line %d: %s\n",__FILE__,__LINE__,asctime(localtime(&lt)));
fprintf(pFile,"Error : %s : Line %d: %s\n",__FILE__,__LINE__,asctime(localtime(&lt)));

fprintf(pFile,"=======COMPLETED========");
return 0;
}

Here I could print the log time..but always its same..I need it in a sequence order..
Could you please help me out on this..?

Thanks in advance..!

This line actually gets the time:

Code:

lt = time(NULL);

You need to keep updating it.

Could you please explain it..?

What I have to give ther?

You are reading the current time into the variable lt only once. Never again afterwards. That way it will never change during the runtime of your program.

Time changes over... well... time. Wait 10 minutes and lt becomes 10 minutes out of date. The exact same thing.

I tried with multiple initialization of lt = time(NULL);

But the time varies only once...Afterwards again its printing as constant time...

Can anybody help me out..?

Thanks in advance...!

Where did you put the additional invocations? How do you call your program?