문제
풀이
#include <ctime>
#include <iostream>
using namespace std;
int main(void) {
time_t t = time(NULL);
struct tm tm = *localtime(&t);
cout << tm.tm_year + 1900 << '-';
if (tm.tm_mon + 1 < 10) cout << '0';
cout << tm.tm_mon + 1 << '-';
if (tm.tm_mday < 10) cout << '0';
cout << tm.tm_mday << endl;
return 0;
}