백준 1942번 디지털시계

문제 링크입니다: www.acmicpc.net/problem/1942

1942번: 디지털시계

쉽지만 문자열 처리가 다소 까다로운 문제였습니다.

	#include <iostream>
	#include <string>
	using namespace std;
	const int MAX = 3;
	const int MAX_SECOND = 60;
	const int MAX_MINUTE = 60;
	const int MAX_HOUR = 24;
	typedef struct
	{
	int hour, minute, second;
	}Time;
	void getTimeStruct(string input, Time &startTime, Time &endTime)
	{
	startTime.hour = stoi(input.substr(0, 2));
	startTime.minute = stoi(input.substr(3, 2));
	startTime.second = stoi(input.substr(6, 2));
	endTime.hour = stoi(input.substr(9, 2));
	endTime.minute = stoi(input.substr(12, 2));
	endTime.second = stoi(input.substr(15, 2));
	}
	bool isTimeEqual(Time startTime, Time endTime)
	{
	return startTime.hour == endTime.hour
	&& startTime.minute == endTime.minute
	&& startTime.second == endTime.second;
	}
	int convertTimeStructToInt(Time time)
	{
	return time.hour * 10000 + time.minute * 100 + time.second;
	}
	void incrementTime(Time &time)
	{
	time.second++;
	if (time.second == MAX_SECOND)
	{
	time.second = 0;
	time.minute++;
	}
	if (time.minute == MAX_MINUTE)
	{
	time.minute = 0;
	time.hour++;
	}
	if (time.hour == MAX_HOUR)
	{
	time.hour = 0;
	}
	}
	int main(void)
	{
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	for (int i = 0; i < MAX; i++)
	{
	string input;
	getline(cin, input);
	Time startTime, endTime;
	getTimeStruct(input, startTime, endTime);
	int result = 0;
	while (1)
	{
	int start = convertTimeStructToInt(startTime);
	int end = convertTimeStructToInt(endTime);
	if (start % 3 == 0)
	{
	result++;
	}
	if (isTimeEqual(startTime, endTime))
	{
	break;
	}
	incrementTime(startTime);
	}
	cout << result << "\n";
	}
	}

view raw .cpp hosted with ❤ by GitHub

 

개발환경:Visual Studio 2017

 

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