Language: C++

#include <iostream>
#include <vector>

int main()
{
	using namespace std;

	int card_num;
	int count;
	int num;
	int S[13];
	int H[13];
	int C[13];
	int D[13];
	char mark;

	cin >> card_num;

	while (count<card_num)
	{
		cin >> mark >> num;
		switch (mark)
		{
		case 'S':
			S[num - 1] = num;
			break;
		case 'H':
			H[num - 1] = num;
			break;
		case 'C':
			C[num - 1] = num;
			break;
		case 'D':
			D[num - 1] = num;
			break;
		}
		count++;
	}
	for (int i = 0; i<13; i++){
		if (S[i] == 0)
			cout << "S " << i + 1 << endl;
 ????????? }
	for (int i = 0; i<13; i++){
		if (H[i] == 0)
			cout << "H " << i + 1 << endl;
        }
	for (int i = 0; i<13; i++){
		if (C[i] == 0)
			cout << "C " << i + 1 << endl;
        }
	for (int i = 0; i<13; i++){
		if (D[i] == 0)
			cout << "D " << i + 1 << endl;
        }
	return 0;

}

Compiler output:
a.cc: In function 'int main()':
a.cc:42:2: error: expected primary-expression before '?' token
   42 |  ????????? }
      |  ^
a.cc:42:3: error: expected primary-expression before '?' token
   42 |  ????????? }
      |   ^
a.cc:42:4: error: expected primary-expression before '?' token
   42 |  ????????? }
      |    ^
a.cc:42:5: error: expected primary-expression before '?' token
   42 |  ????????? }
      |     ^
a.cc:42:6: error: expected primary-expression before '?' token
   42 |  ????????? }
      |      ^
a.cc:42:7: error: expected primary-expression before '?' token
   42 |  ????????? }
      |       ^
a.cc:42:8: error: expected primary-expression before '?' token
   42 |  ????????? }
      |        ^
a.cc:42:9: error: expected primary-expression before '?' token
   42 |  ????????? }
      |         ^
a.cc:42:10: error: expected primary-expression before '?' token
   42 |  ????????? }
      |          ^
a.cc:42:12: error: expected primary-expression before '}' token
   42 |  ????????? }
      |            ^
a.cc:42:11: error: expected ':' before '}' token
   42 |  ????????? }
      |           ^~
      |           :
a.cc:42:12: error: expected primary-expression before '}' token
   42 |  ????????? }
      |            ^
a.cc:42:11: error: expected ':' before '}' token
   42 |  ????????? }
      |           ^~
      |           :
a.cc:42:12: error: expected primary-expression before '}' token
   42 |  ????????? }
      |            ^
a.cc:42:11: error: expected ':' before '}' token
   42 |  ????????? }
      |           ^~
      |           :
a.cc:42:12: error: expected primary-expression before '}' token
   42 |  ????????? }
      |            ^
a.cc:42:11: error: expected ':' before '}' token
   42 |  ????????? }
      |           ^~
      |           :
a.cc:42:12: error: expected primary-expression before '}' token
   42 |  ????????? }
      |            ^
a.cc:42:11: error: expected ':' before '}' token
   42 |  ????????? }
      |           ^~
      |           :
a.cc:42:12: error: expected primary-expression before '}' token
   42 |  ????????? }
      |            ^
a.cc:42:11: error: expected ':' before '}' token
   42 |  ????????? }
      |           ^~
      |           :
a.cc:42:12: error: expected primary-expression before '}' token
   42 |  ????????? }
      |            ^
a.cc:42:11: error: expected ':' before '}' token
   42 |  ????????? }
      |           ^~
      |           :
a.cc:42:12: error: expected primary-expression before '}' token
   42 |  ????????? }
      |            ^
a.cc:42:11: error: expected ':' before '}' token
   42 |  ????????? }
      |           ^~
      |           :
a.cc:42:12: error: expected primary-expression before '}' token
   42 |  ????????? }
      |            ^
a.cc:42:11: error: expected ':' before '}' token
   42 |  ????????? }
      |           ^~
      |           :
a.cc:42:12: error: expected primary-expression before '}' token
   42 |  ????????? }
      |            ^