[ BOJ/C++ ] 10699 오늘 날짜

https://www.acmicpc.net/problem/10699

10699번: 오늘 날짜

전에 풀어두고 제출 안 한 문제가 있어 올린다. 

#include <iostream>
#include <ctime>


int main()
{
    std::time_t timer = time(NULL);

    //struct tm t;
    //localtime_s(&t, &timer);

    //t.tm_hour -= 3;
    //std::cout << t.tm_year + 1900 << '-';
    //std::cout.width(2);
    //std::cout.fill('0');
    //std::cout << t.tm_mon + 1 << '-';
    //std::cout.width(2);
    //std::cout.fill('0');
    //std::cout << t.tm_mday;

    struct tm* t = localtime(&timer);
    t->tm_hour -= 3;

    std::cout << t->tm_year + 1900 << '-';
    std::cout.width(2);
    std::cout.fill('0');
    std::cout << t->tm_mon + 1 << '-';
    std::cout.width(2);
    std::cout.fill('0');
    std::cout << t->tm_mday;
    
    return 0;
}