Language: C++

#include <iostream>

using namespace std;

static const int MAX = 36;

struct Card {
  char suit,
  int value
};

void bubble (struct Card A[], int N) {

  bool flag = 1;

  for (int i = 0; flag; i++) {
    flag = 0;
    for (int j = N-1; i < j; j--) {
      if (A[j] < A[j-1]) {
        Card a = A[j-1];
        A[j-1] = A[j];
        A[j] = a;
        flag = 1;
      }
    }
  }

}

void selection (struct Card A[], int N) {

  for (int i = 0; i < N; i++) {
    int minj = i;
    Card origin = A[i];
    for (int j = i; j < N; j++) {
      if (A[j] < A[minj]) {
        minj = j;
      }
    }

    if (i != minj) {
      A[i] = A[minj];
      A[minj] = origin;
    }
  }

}

void print (struct Card A[]) {
  for (int i = 0; i < N; i++) {
    if (i > 0) cout << " ";
    cout << A[i].suit << A[i].value;
  }
  cout << endl;
}

bool isStable (struct Card C1[], struct Card C2[], int N) {
  for (int i = 0; i < N; i++) {
    if (C1[i].suit != C2[i].suit) return false;
  }
  return true;
}

int main () {

  int N;
  Card C1[MAX], C2[MAX];

  cin >> N;

  for (int i = 0; i < N; i++) {
    cin >> C1[i].suit >> C1[i].value;
    C2[i] = C1[i];
  }

  bubble(C1, N);
  selection(C2, N);

  print(C1);
  cout << "Stable" << endl;
  print(C2);
  if (isStable(C1, C2, N)) {
    cout << "Stable" << endl;
  } else {
    cout << "Not stable" << endl;
  }
}

Compiler output:
a.cc:9:3: error: expected unqualified-id before 'int'
    9 |   int value
      |   ^~~
a.cc: In function 'void bubble(Card*, int)':
a.cc:19:16: error: no match for 'operator<' (operand types are 'Card' and 'Card')
   19 |       if (A[j] < A[j-1]) {
      |           ~~~~ ^ ~~~~~~
      |              |        |
      |              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:448:5: note: candidate: 'template<class _Iterator> constexpr bool std::operator<(const reverse_iterator<_Iterator>&, const reverse_iterator<_Iterator>&)'
  448 |     operator<(const reverse_iterator<_Iterator>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:448:5: note:   template argument deduction/substitution failed:
a.cc:19:23: note:   'Card' is not derived from 'const std::reverse_iterator<_Iterator>'
   19 |       if (A[j] < A[j-1]) {
      |                       ^
/usr/include/c++/14/bits/stl_iterator.h:493:5: note: candidate: 'template<class _IteratorL, class _IteratorR> constexpr bool std::operator<(const reverse_iterator<_Iterator>&, const reverse_iterator<_IteratorR>&)'
  493 |     operator<(const reverse_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:493:5: note:   template argument deduction/substitution failed:
a.cc:19:23: note:   'Card' is not derived from 'const std::reverse_iterator<_Iterator>'
   19 |       if (A[j] < A[j-1]) {
      |                       ^
/usr/include/c++/14/bits/stl_iterator.h:1694:5: note: candidate: 'template<class _IteratorL, class _IteratorR> constexpr bool std::operator<(const move_iterator<_IteratorL>&, const move_iterator<_IteratorR>&)'
 1694 |     operator<(const move_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:1694:5: note:   template argument deduction/substitution failed:
a.cc:19:23: note:   'Card' is not derived from 'const std::move_iterator<_IteratorL>'
   19 |       if (A[j] < A[j-1]) {
      |                       ^
/usr/include/c++/14/bits/stl_iterator.h:1760:5: note: candidate: 'template<class _Iterator> constexpr bool std::operator<(const move_iterator<_IteratorL>&, const move_iterator<_IteratorL>&)'
 1760 |     operator<(const move_iterator<_Iterator>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:1760:5: note:   template argument deduction/substitution failed:
a.cc:19:23: note:   'Card' is not derived from 'const std::move_iterator<_IteratorL>'
   19 |       if (A[j] < A[j-1]) {
      |                       ^
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:1045:5: note: candidate: 'template<class _T1, class _T2> constexpr bool std::operator<(const pair<_T1, _T2>&, const pair<_T1, _T2>&)'
 1045 |     operator<(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_pair.h:1045:5: note:   template argument deduction/substitution failed:
a.cc:19:23: note:   'Card' is not derived from 'const std::pair<_T1, _T2>'
   19 |       if (A[j] < A[j-1]) {
      |                       ^
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:673:5: note: candidate: 'template<class _CharT, class _Traits> constexpr bool std::operator<(basic_string_view<_CharT, _Traits>, basic_string_view<_CharT, _Traits>)'
  673 |     operator< (basic_string_view<_CharT, _Traits> __x,
      |     ^~~~~~~~
/usr/include/c++/14/string_view:673:5: note:   template argument deduction/substitution failed:
a.cc:19:23: note:   'Card' is not derived from 'std::basic_string_view<_CharT, _Traits>'
   19 |       if (A[j] < A[j-1]) {
      |                       ^
/usr/include/c++/14/string_view:680:5: note: candidate: 'template<class _CharT, class _Traits> constexpr bool std::operator<(basic_string_view<_CharT, _Traits>, __type_identity_t<basic_string_view<_CharT, _Traits> >)'
  680 |     operator< (basic_string_view<_CharT, _Traits> __x,
      |     ^~~~~~~~
/usr/include/c++/14/string_view:680:5: note:   template argument deduction/substitution failed:
a.cc:19:23: note:   'Card' is not derived from 'std::basic_string_view<_CharT, _Traits>'
   19 |       if (A[j] < A[j-1]) {
      |                       ^
/usr/include/c++/14/string_view:688:5: note: candidate: 'template<class _CharT, class _Traits> constexpr bool std::operator<(__type_identity_t<basic_string_view<_CharT, _Traits> >, basic_string_view<_CharT, _Traits>)'
  688 |     operator< (__type_identity_t<basic_string_view<_CharT, _Traits>> __x,
      |     ^~~~~~~~
/usr/include/c++/14/string_view:688:5: note:   template argument deduction/substitution failed:
a.cc:19:23: note:   'Card' is not derived from 'std::basic_string_view<_CharT, _Traits>'
   19 |       if (A[j] < A[j-1]) {
      |                       ^
/usr/include/c++/14/bits/basic_string.h:3874:5: 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>&)'
 3874 |     operator<(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3874:5: note:   template argument deduction/substitution failed:
a.cc:19:23: note:   'Card' is not derived from 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>'
   19 |       if (A[j] < A[j-1]) {
      |                       ^
/usr/include/c++/14/bits/basic_string.h:3888:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> bool std::operator<(const __cxx11::basic_string<_CharT, _Traits, _Allocator>&, const _CharT*)'
 3888 |     operator<(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3888:5: note:   template argument deduction/substitution failed:
a.cc:19:23: note:   'Card' is not derived from 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>'
   19 |       if (A[j] < A[j-1]) {
      |                       ^
/usr/include/c++/14/bits/basic_string.h:3901:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> bool std::operator<(const _CharT*, const __cxx11::basic_string<_CharT, _Traits, _Allocator>&)'
 3901 |     operator<(const _CharT* __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3901:5: note:   template argument deduction/substitution failed:
a.cc:19:23: note:   mismatched types 'const _CharT*' and 'Card'
   19 |       if (A[j] < A[j-1]) {
      |                       ^
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:2600:5: note: candidate: 'template<class ... _TElements, class ... _UElements> constexpr bool std::operator<(const tuple<_UTypes ...>&, const tuple<_Elements ...>&)'
 2600 |     operator<(const tuple<_TElements...>& __t,
      |     ^~~~~~~~
/usr/include/c++/14/tuple:2600:5: note:   template argument deduction/substitution failed:
a.cc:19:23: note:   'Card' is not derived from 'const std::tuple<_UTypes ...>'
   19 |       if (A[j] < A[j-1]) {
      |                       ^
In file included from /usr/include/c++/14/bits/ios_base.h:46:
/usr/include/c++/14/system_error:324:3: note: candidate: 'bool std::operator<(const error_code&, const error_code&)'
  324 |   operator<(const error_code& __lhs, const error_code& __rhs) noexcept
      |   ^~~~~~~~
/usr/include/c++/14/system_error:324:31: note:   no known conversion for argument 1 from 'Card' to 'const std::error_code&'
  324 |   operator<(const error_code& __lhs, const error_code& __rhs) noexcept
      |             ~~~~~~~~~~~~~~~~~~^~~~~
/usr/include/c++/14/system_error:507:3: note: candidate: 'bool std::operator<(const error_condition&, const error_condition&)'
  507 |   operator<(const error_condition& __lhs,
      |   ^~~~~~~~
/usr/include/c++/14/system_error:507:36: note:   no known conversion for argument 1 from 'Card' to 'const std::error_condition&'
  507 |   operator<(const error_condition& __lhs,
      |             ~~~~~~~~~~~~~~~~~~~~~~~^~~~~
a.cc: In function 'void selection(Card*, int)':
a.cc:36:16: error: no match for 'operator<' (operand types are 'Card' and 'Card')
   36 |       if (A[j] < A[minj]) {
      |           ~~~~ ^ ~~~~~~~
      |              |         |
      |              Card      Card
/usr/include/c++/14/bits/stl_iterator.h:448:5: note: candidate: 'template<class _Iterator> constexpr bool std::operator<(const reverse_iterator<_Iterator>&, const reverse_iterator<_Iterator>&)'
  448 |     operator<(const reverse_iterator<_Iterator>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:448:5: note:   template argument deduction/substitution failed:
a.cc:36:24: note:   'Card' is not derived from 'const std::reverse_iterator<_Iterator>'
   36 |       if (A[j] < A[minj]) {
      |                        ^
/usr/include/c++/14/bits/stl_iterator.h:493:5: note: candidate: 'template<class _IteratorL, class _IteratorR> constexpr bool std::operator<(const reverse_iterator<_Iterator>&, const reverse_iterator<_IteratorR>&)'
  493 |     operator<(const reverse_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:493:5: note:   template argument deduction/substitution failed:
a.cc:36:24: note:   'Card' is not derived from 'const std::reverse_iterator<_Iterator>'
   36 |       if (A[j] < A[minj]) {
      |                        ^
/usr/include/c++/14/bits/stl_iterator.h:1694:5: note: candidate: 'template<class _IteratorL, class _IteratorR> constexpr bool std::operator<(const move_iterator<_IteratorL>&, const move_iterator<_IteratorR>&)'
 1694 |     operator<(const move_iterator<_Iterator