我怎样才能一次打印每秒

您好，

我有下面的代码片段:

#include "TimeUtils.hpp"



FILE *output;                   // internal filename



int main(int argc, char *argv[])

{

 

//?

//More code

//?



time01 = time_now(); // Returns the time now

    while(1)

    {

        time02 = time_now(); // Returns the time now

        static long count  = 0;

        count  = (time02-time01)/1000; // Number of seconds since time01?


        Rangek.runge4(count, y, dist); // Method executed in real time [Is this the way to do this?]



/*

My problem:

	I want to print to file output?only once per second.

	How do I do that?

*/

        if((count%2) != 0)

        {

            fprintf(output, "%f\t%f\n", count, y[0]);

            continue;

        }

 

        cout << "Counting: " << count << " seconds\n";

 

        if( ((time02-time01)/1000) >= 10) break; // Stop after 10 second

    }

 



    fclose(output);

 

return 0;

 

}