On Tuesday, October 1, 2013 9:38:07 PM UTC+2, ignacio...@gmail.com wrote:
>
>
>
> On Tuesday, October 1, 2013 2:11:39 PM UTC+2, Dieter Wirz wrote:
>>
>> On Thu, Sep 26, 2013 at 9:36 PM, <ignacio...@gmail.com> wrote:
>> > hello,
>> >
>> > I tried several ways ( clock(), gettimeofday()..) but I can get the
>> proper
>> > way to measure the elapsed time in microseconds.
>> >
>> > I am using eclipse to program in ansi c. Could anybody help me about
>> how to
>> > measure the elapsed time in microsecond? Could it be possible to
>> enclosed
>> > the code that I should use?
>> Ansi C or C++ (as in the title)?
>> In Ansi C it might look like this:
>>
>> #include <sys/time.h>
>> #include <stdio.h>
>> // compile with: gcc -Wall gettimeofday.c -o gettimeofday
>> void main()
>> {
>> float elapsed_time;
>> struct timeval start_time, end_time;
>> gettimeofday( &start_time, NULL );
>> for (;;){
>> gettimeofday( &end_time, NULL );
>> elapsed_time = end_time.tv_sec - start_time.tv_sec + (
>> end_time.tv_usec - start_time.tv_usec ) / 1e6;
>> printf( "sec: %g \r", elapsed_time );
>> }
>> }
>>
>
>
>
>
>
> hi, Sorry for disturbing you. How can I compile "gcc -Wall gettimeofday.c
> -o gettimeofday " in eclipse under ubuntu?
>
> I got some errors:
> Field "tv_sec" could not be resolved
> Field "tv_usec" could not be resolved
> symbol "cout" could not be resolved
> symbol "endl" could not be resolved
> symbol "std" could not be resolved
>
> Sorry for the inconveniences
>
> Regards
>
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