Re: Convert time_t to char?

"Jim Langston" <>
Thu, 20 Mar 2008 18:15:29 -0700
Jonathan wrote:

I have taken up C++ programming again and need to write a socket
client, so far I am able to create the connection to the socket.

As I need a unix timestamp in char to put on a socket in a HTTP 1.1
GET request I am looking for a way to convert the unix timestamp to a
I am using the following code to generate my unix timestamp:


    time_t mytime; /* calendar time */
    mytime=time(NULL); /* get current cal time */

    char chTime[10];

    // Here I would like to do some conversion

    strcpy (buffer, "GET /?t=" . chTime .
       "HTTP/1.1\r\nHost: localhost\r\n\r\n");

    write(clientSocket, buffer, sizeof(buffer) -1);

Microsoft Visual C++ .net 2003 has asctime. I'm not sure if this is
standard or not. See if your implemenation uses it.
Apparently it's used like:

#include <time.h>
#include <stdio.h>

struct tm *newtime;
time_t aclock;

int main( void )
   time( &aclock ); // Get time in seconds
   newtime = localtime( &aclock ); // Convert time to struct tm form

   /* Print local time as a string */
   printf( "Current date and time: %s", asctime( newtime ) );

Jim Langston

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