c 시간 학습

linux

#include <stdio.h>

#include <time.h>



int main(int argc,char **argv)

{

    //         

    struct timeval tv;

    gettimeofday(&tv,NULL);

    time_t t=time(0);

    printf("%u---%u+++%u
",tv.tv_sec,tv.tv_usec,t);

    //      

    char tmp[64];

    strftime(tmp,sizeof(tmp),"%Y%m%d%H%M%S
",localtime(&t));

    printf("%s",tmp);

    return 0;

}

windows

#include <stdio.h>

#include <time.h>



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

{

    //windows  timeval  ，     gettimeofday  

    //struct timeval tv;

    //gettimeofday(&tv,NULL);

    

    time_t t=time(0);

    char tmp[64];

    strftime(tmp,sizeof(tmp),"%Y%m%d-%H%M%S",localtime(&t));

    printf("%s",tmp);

    

    return 0;

}