批次檔wait程式

#include <stdio.h>
int main(int argc, int* argv[])
{
    if (argc > 1 && argv[1])
    {
        int time = atoi(argv[1]);
        if (time)
            _sleep(time);
        else
            printf("usage: wait time(millisecond) e.g.:\nwait 1000\n");
    }
    else
        printf("usage: wait time(millisecond) e.g.:\nwait 1000\n");
    return 0;
}