Blog ^A Jianing YANG's

#include <sys/time.h>
#include <iostream>
#include <string>

int main()
{
        struct timeval tv[2];
        struct timezone tz;

        int count = 50000;
        int elapsed = 0;

        // .. string initialization

        gettimeofday(&amp;tv[0], &amp;tz);
        while(count--) {
        // .. real action here ..
        }
        gettimeofday(&amp;tv[1], &amp;tz);

        elapsed = (tv[1].tv_sec - tv[0].tv_sec) * 1000000
                      + (tv[1].tv_usec - tv[0].tv_usec);

        std::cout << "elapsed: " << (double)elapsed / 1000 << "ms" << std::endl;
}