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#include 
   
    #include 
    
     int main(){    time_t currentTime;    struct tm *tm_time;    currentTime = time(NULL);    tm_time = localtime(&currentTime);    printf("from localtime %02d:%02d:%02d\n", tm_time->tm_hour, tm_time->tm_min, tm_time->tm_sec);        printf("from ctime %s\n", ctime(&currentTime));    printf("from asctime/localtime %s\n", asctime(tm_time));    tm_time = gmtime(&currentTime);            printf("form gmtime %02d:%02d:%02d\n", tm_time->tm_hour, tm_time->tm_min, tm_time->tm_sec);    printf("from asctime/gmtime %s\n", asctime(tm_time));    currentTime = mktime(tm_time);    printf("from ctime/mktime %s\n", ctime(&currentTime));    return 0;}
    
   

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