calculate time spending in C++

time_spend.cc

int test1(){
    cout<< " OK " << endl;
    KestrelServer ks("localhost",22133);
    int max = 1000000;

    struct timeval start, end;
    long mtime, seconds, useconds;
    gettimeofday(&start, NULL);

    int count = 0;
    char data[1024];
    data[1023]='\0';
    const char * msg = data;
    while(count < max){
        ks.Send("scoring",msg,5);
        count++;
    }
    gettimeofday(&end, NULL);
    seconds  = end.tv_sec  - start.tv_sec;
    useconds = end.tv_usec - start.tv_usec;

    mtime = ((seconds) * 1000 + useconds/1000.0) + 0.5;
    cout << mtime << endl;
}