Submission #1520703

---

Source Code Expand

#include <vector>
#include <queue>
#include <algorithm>
#include <iostream>
#include <string>
#include <ctime>
#include <map>
#include <stack>
#include <sstream>

using namespace std;

int main(void)
{
	queue <char> s1, s2, s3;
	char temp;
	while (1)
	{
		scanf("%c", &temp);
		if (temp == '\n')
		{
			break;
		}
		s1.push(temp);
	}

	while (1)
	{
		scanf("%c", &temp);
		if (temp == '\n')
		{
			break;
		}
		s2.push(temp);
	}

	while (1)
	{
		scanf("%c", &temp);
		if (temp == '\n')
		{
			break;
		}
		s3.push(temp);
	}

	char card = 'a';
	while (1)
	{
		if (card == 'a')
		{
			if (s1.empty())
			{
				cout << 'A' << endl;
				break;
			}
			card = s1.front();
			s1.pop();
		}

		else if (card == 'b')
		{
			if (s2.empty())
			{
				cout << 'B' << endl;
				break;
			}
			card = s2.front();
			s2.pop();
		}

		else if (card == 'c')
		{
			if (s3.empty())
			{
				cout << 'C' << endl;
				break;
			}
			card = s3.front();
			s3.pop();
		}
	}
	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:19:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%c", &temp);
                     ^
./Main.cpp:29:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%c", &temp);
                     ^
./Main.cpp:39:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%c", &temp);
                     ^

Judge Result