Language: C++

#include <iostream>
using namespace std;
const int MAX = 36;

struct Card
{
	char suit;
	int num;
};

void swap(Card c1, Card c2)
{
	char char_temp;
	int int_temp;

	char_temp = c1.suit;
	int_temp = c1.num;

	c1.suit = c2.suit;
	c1.num = c2.num;
	c2.suit = char_temp;
	c2.num = int_temp;

}

bool isEqual(Card c1[], Card c2[], int n)
{
	for(int i = 0; i < n; i++)
	{
		if((c1[i].suit != c2[i].suit) || (c1[i].num != c2[i].num))
			return false;
	}
	return true;
}

int main()
{
	int n, mini;
	Card c1[n], c2[n]; 
	for(int i = 0; i < n; i++)
	{
		cin >> c1[i].suit >> c1[i].num;
		c2[i].suit = c1[i].suit;
		c2[i].num = c1[i].num;
	}

	for(int i = 0; i < n; i++)
	{
		for(int j = n-1; j >= i+1; j--)
		{
			if(c1[j-1] > c1[j])
			{
				swap(c1[j-1], c1[j]);
			}
		}
	}

	for(int i = 0; i < n; i++)
	{
		mini = i;
		for(int j = i; j < n; j++)
		{
			if(c2[mini] > c2[j])
			{
				mini = j;
			}
		}
		if(mini != i)
		{
			swap(c[mini], c[i]);
		}
	}

	for(int i = 0; i < n-1; i++)
	{
		cout << c1[i].suit << c1[i].num << ' ';
	}
	cout << c1[n-1].suit << c1[n-1].num << endl;
	cout << "Stable\n";

	for(int i = 0; i < n-1; i++)
	{
		cout << c2[i].suit << c2[i].num << ' ';
	}
	cout << c2[n-1].suit << c2[n-1].num << endl;

	if(isEqual(c1, c2, n))
	{
		cout << "Stable\n";
	}
	else
	{
		cout << "Not stable\n";
	}

}


Compiler output:
a.cc: In function 'int main()':
a.cc:51:36: error: no match for 'operator>' (operand types are 'Card' and 'Card')
   51 |                         if(c1[j-1] > c1[j])
      |                            ~~~~~~~ ^ ~~~~~
      |                                  |       |
      |                                  Card    Card
In file included from /usr/include/c++/14/string:48,
                 from /usr/include/c++/14/bits/locale_classes.h:40,
                 from /usr/include/c++/14/bits/ios_base.h:41,
                 from /usr/include/c++/14/ios:44,
                 from /usr/include/c++/14/ostream:40,
                 from /usr/include/c++/14/iostream:41,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_iterator.h:462:5: note: candidate: 'template<class _Iterator> constexpr bool std::operator>(const reverse_iterator<_Iterator>&, const reverse_iterator<_Iterator>&)'
  462 |     operator>(const reverse_iterator<_Iterator>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:462:5: note:   template argument deduction/substitution failed:
a.cc:51:42: note:   'Card' is not derived from 'const std::reverse_iterator<_Iterator>'
   51 |                         if(c1[j-1] > c1[j])
      |                                          ^
/usr/include/c++/14/bits/stl_iterator.h:507:5: note: candidate: 'template<class _IteratorL, class _IteratorR> constexpr bool std::operator>(const reverse_iterator<_Iterator>&, const reverse_iterator<_IteratorR>&)'
  507 |     operator>(const reverse_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:507:5: note:   template argument deduction/substitution failed:
a.cc:51:42: note:   'Card' is not derived from 'const std::reverse_iterator<_Iterator>'
   51 |                         if(c1[j-1] > c1[j])
      |                                          ^
/usr/include/c++/14/bits/stl_iterator.h:1714:5: note: candidate: 'template<class _IteratorL, class _IteratorR> constexpr bool std::operator>(const move_iterator<_IteratorL>&, const move_iterator<_IteratorR>&)'
 1714 |     operator>(const move_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:1714:5: note:   template argument deduction/substitution failed:
a.cc:51:42: note:   'Card' is not derived from 'const std::move_iterator<_IteratorL>'
   51 |                         if(c1[j-1] > c1[j])
      |                                          ^
/usr/include/c++/14/bits/stl_iterator.h:1774:5: note: candidate: 'template<class _Iterator> constexpr bool std::operator>(const move_iterator<_IteratorL>&, const move_iterator<_IteratorL>&)'
 1774 |     operator>(const move_iterator<_Iterator>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:1774:5: note:   template argument deduction/substitution failed:
a.cc:51:42: note:   'Card' is not derived from 'const std::move_iterator<_IteratorL>'
   51 |                         if(c1[j-1] > c1[j])
      |                                          ^
In file included from /usr/include/c++/14/bits/stl_algobase.h:64,
                 from /usr/include/c++/14/string:51:
/usr/include/c++/14/bits/stl_pair.h:1058:5: note: candidate: 'template<class _T1, class _T2> constexpr bool std::operator>(const pair<_T1, _T2>&, const pair<_T1, _T2>&)'
 1058 |     operator>(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_pair.h:1058:5: note:   template argument deduction/substitution failed:
a.cc:51:42: note:   'Card' is not derived from 'const std::pair<_T1, _T2>'
   51 |                         if(c1[j-1] > c1[j])
      |                                          ^
In file included from /usr/include/c++/14/bits/basic_string.h:47,
                 from /usr/include/c++/14/string:54:
/usr/include/c++/14/string_view:695:5: note: candidate: 'template<class _CharT, class _Traits> constexpr bool std::operator>(basic_string_view<_CharT, _Traits>, basic_string_view<_CharT, _Traits>)'
  695 |     operator> (basic_string_view<_CharT, _Traits> __x,
      |     ^~~~~~~~
/usr/include/c++/14/string_view:695:5: note:   template argument deduction/substitution failed:
a.cc:51:42: note:   'Card' is not derived from 'std::basic_string_view<_CharT, _Traits>'
   51 |                         if(c1[j-1] > c1[j])
      |                                          ^
/usr/include/c++/14/string_view:702:5: note: candidate: 'template<class _CharT, class _Traits> constexpr bool std::operator>(basic_string_view<_CharT, _Traits>, __type_identity_t<basic_string_view<_CharT, _Traits> >)'
  702 |     operator> (basic_string_view<_CharT, _Traits> __x,
      |     ^~~~~~~~
/usr/include/c++/14/string_view:702:5: note:   template argument deduction/substitution failed:
a.cc:51:42: note:   'Card' is not derived from 'std::basic_string_view<_CharT, _Traits>'
   51 |                         if(c1[j-1] > c1[j])
      |                                          ^
/usr/include/c++/14/string_view:710:5: note: candidate: 'template<class _CharT, class _Traits> constexpr bool std::operator>(__type_identity_t<basic_string_view<_CharT, _Traits> >, basic_string_view<_CharT, _Traits>)'
  710 |     operator> (__type_identity_t<basic_string_view<_CharT, _Traits>> __x,
      |     ^~~~~~~~
/usr/include/c++/14/string_view:710:5: note:   template argument deduction/substitution failed:
a.cc:51:42: note:   'Card' is not derived from 'std::basic_string_view<_CharT, _Traits>'
   51 |                         if(c1[j-1] > c1[j])
      |                                          ^
/usr/include/c++/14/bits/basic_string.h:3915:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> bool std::operator>(const __cxx11::basic_string<_CharT, _Traits, _Allocator>&, const __cxx11::basic_string<_CharT, _Traits, _Allocator>&)'
 3915 |     operator>(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3915:5: note:   template argument deduction/substitution failed:
a.cc:51:42: note:   'Card' is not derived from 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>'
   51 |                         if(c1[j-1] > c1[j])
      |                                          ^
/usr/include/c++/14/bits/basic_string.h:3929:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> bool std::operator>(const __cxx11::basic_string<_CharT, _Traits, _Allocator>&, const _CharT*)'
 3929 |     operator>(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3929:5: note:   template argument deduction/substitution failed:
a.cc:51:42: note:   'Card' is not derived from 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>'
   51 |                         if(c1[j-1] > c1[j])
      |                                          ^
/usr/include/c++/14/bits/basic_string.h:3942:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> bool std::operator>(const _CharT*, const __cxx11::basic_string<_CharT, _Traits, _Allocator>&)'
 3942 |     operator>(const _CharT* __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3942:5: note:   template argument deduction/substitution failed:
a.cc:51:42: note:   mismatched types 'const _CharT*' and 'Card'
   51 |                         if(c1[j-1] > c1[j])
      |                                          ^
In file included from /usr/include/c++/14/bits/memory_resource.h:47,
                 from /usr/include/c++/14/string:68:
/usr/include/c++/14/tuple:2619:5: note: candidate: 'template<class ... _TElements, class ... _UElements> constexpr bool std::operator>(const tuple<_UTypes ...>&, const tuple<_Elements ...>&)'
 2619 |     operator>(const tuple<_TElements...>& __t,
      |     ^~~~~~~~
/usr/include/c++/14/tuple:2619:5: note:   template argument deduction/substitution failed:
a.cc:51:42: note:   'Card' is not derived from 'const std::tuple<_UTypes ...>'
   51 |                         if(c1[j-1] > c1[j])
      |                                          ^
a.cc:63:37: error: no match for 'operator>' (operand types are 'Card' and 'Card')
   63 |                         if(c2[mini] > c2[j])
      |                            ~~~~~~~~ ^ ~~~~~
      |                                   |       |
      |                                   Card    Card
/usr/include/c++/14/bits/stl_iterator.h:462:5: note: candidate: 'template<class _Iterator> constexpr bool std::operator>(const reverse_iterator<_Iterator>&, const reverse_iterator<_Iterator>&)'
  462 |     operator>(const reverse_iterator<_Iterator>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:462:5: note:   template argument deduction/substitution failed:
a.cc:63:43: note:   'Card' is not derived from 'const std::reverse_iterator<_Iterator>'
   63 |                         if(c2[mini] > c2[j])
      |                                           ^
/usr/include/c++/14/bits/stl_iterator.h:507:5: note: candidate: 'template<class _IteratorL, class _IteratorR> constexpr bool std::operator>(const reverse_iterator<_Iterator>&, const reverse_iterator<_IteratorR>&)'
  507 |     operator>(const reverse_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:507:5: note:   template argument deduction/substitution failed:
a.cc:63:43: note:   'Card' is not derived from 'const std::reverse_iterator<_Iterator>'
   63 |                         if(c2[mini] > c2[j])
      |                                           ^
/usr/include/c++/14/bits/stl_iterator.h:1714:5: note: candidate: 'template<class _IteratorL, class _IteratorR> constexpr bool std::operator>(const move_iterator<_IteratorL>&, const move_iterator<_IteratorR>&)'
 1714 |     operator>(const move_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:1714:5: note:   template argument deduction/substitution failed:
a.cc:63:43: note:   'Card' is not derived from 'const std::move_iterator<_IteratorL>'
   63 |                         if(c2[mini] > c2[j])
      |                                           ^
/usr/include/c++/14/bits/stl_iterator.h:1774:5: note: candidate: 'template<class _Iterator> constexpr bool std::operato