Language: C++

#include<bits/stdc++.h>
#define MAX 100
using namespace std;

struct Card { char suit, value; };

void bubbleSort(struct Card C[], int N) {
  for (int i = 0; i < N; i++) {
    for (int j = N - 1; j >= i + 1; j--) {
      if (C[j].value < C[j - 1]) {
        Card temp = C[j];
        C[j] = C[j - 1];
        C[j - 1] = temp;
      }
    }
  }
}

void selectionSort(struct Card C[], int N) {
  for (int i = 0; i < N; i++) {
    int minj = i;
    for (int j = i; j < N; j++) {
      if (C[j].value < C[minj].value) {
        minj = j;
      }
    }
    Card temp = C[i];
    C[i] = C[minj];
    C[minj] = temp;
  }
}

void print(struct Card C[], int N) [
  for (int i = 0; i < N; i++) {
    if (i > 0) cout << " ";
    cout << C[i].suit << C[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() {
  Card C1[MAX], C2[MAX];
  int N;
  
  cin >> N;
  for (int i = 0; i < N; i++) {
    cin >> C1[i].suit >> C1[i].value;
    C2[i] = C1[i];
  }

  bubbleSort(C1, N);
  selectionSort(C2, N);

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

  return 0;
}

Compiler output:
a.cc: In function 'void bubbleSort(Card*, int)':
a.cc:10:22: error: no match for 'operator<' (operand types are 'char' and 'Card')
   10 |       if (C[j].value < C[j - 1]) {
      |           ~~~~~~~~~~ ^ ~~~~~~~~
      |                |              |
      |                char           Card
In file included from /usr/include/c++/14/regex:68,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:181,
                 from a.cc:1:
/usr/include/c++/14/bits/regex.h:1143:5: note: candidate: 'template<class _BiIter> bool std::__cxx11::operator<(const sub_match<_BiIter>&, const sub_match<_BiIter>&)'
 1143 |     operator<(const sub_match<_BiIter>& __lhs, const sub_match<_BiIter>& __rhs)
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1143:5: note:   template argument deduction/substitution failed:
a.cc:10:31: note:   mismatched types 'const std::__cxx11::sub_match<_BiIter>' and 'char'
   10 |       if (C[j].value < C[j - 1]) {
      |                               ^
/usr/include/c++/14/bits/regex.h:1224:5: note: candidate: 'template<class _Bi_iter, class _Ch_traits, class _Ch_alloc> bool std::__cxx11::operator<(__sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>&, const sub_match<_BiIter>&)'
 1224 |     operator<(const __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1224:5: note:   template argument deduction/substitution failed:
a.cc:10:31: note:   mismatched types 'std::__cxx11::__sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>' and 'char'
   10 |       if (C[j].value < C[j - 1]) {
      |                               ^
/usr/include/c++/14/bits/regex.h:1317:5: note: candidate: 'template<class _Bi_iter, class _Ch_traits, class _Ch_alloc> bool std::__cxx11::operator<(const sub_match<_BiIter>&, __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>&)'
 1317 |     operator<(const sub_match<_Bi_iter>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1317:5: note:   template argument deduction/substitution failed:
a.cc:10:31: note:   mismatched types 'const std::__cxx11::sub_match<_BiIter>' and 'char'
   10 |       if (C[j].value < C[j - 1]) {
      |                               ^
/usr/include/c++/14/bits/regex.h:1391:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator<(const typename std::iterator_traits<_Iter>::value_type*, const sub_match<_BiIter>&)'
 1391 |     operator<(typename iterator_traits<_Bi_iter>::value_type const* __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1391:5: note:   template argument deduction/substitution failed:
a.cc:10:31: note:   'Card' is not derived from 'const std::__cxx11::sub_match<_BiIter>'
   10 |       if (C[j].value < C[j - 1]) {
      |                               ^
/usr/include/c++/14/bits/regex.h:1485:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator<(const sub_match<_BiIter>&, const typename std::iterator_traits<_Iter>::value_type*)'
 1485 |     operator<(const sub_match<_Bi_iter>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1485:5: note:   template argument deduction/substitution failed:
a.cc:10:31: note:   mismatched types 'const std::__cxx11::sub_match<_BiIter>' and 'char'
   10 |       if (C[j].value < C[j - 1]) {
      |                               ^
/usr/include/c++/14/bits/regex.h:1560:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator<(const typename std::iterator_traits<_Iter>::value_type&, const sub_match<_BiIter>&)'
 1560 |     operator<(typename iterator_traits<_Bi_iter>::value_type const& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1560:5: note:   template argument deduction/substitution failed:
a.cc:10:31: note:   'Card' is not derived from 'const std::__cxx11::sub_match<_BiIter>'
   10 |       if (C[j].value < C[j - 1]) {
      |                               ^
/usr/include/c++/14/bits/regex.h:1660:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator<(const sub_match<_BiIter>&, const typename std::iterator_traits<_Iter>::value_type&)'
 1660 |     operator<(const sub_match<_Bi_iter>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1660:5: note:   template argument deduction/substitution failed:
a.cc:10:31: note:   mismatched types 'const std::__cxx11::sub_match<_BiIter>' and 'char'
   10 |       if (C[j].value < C[j - 1]) {
      |                               ^
In file included from /usr/include/c++/14/bits/stl_algobase.h:64,
                 from /usr/include/c++/14/algorithm:60,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h: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:10:31: note:   mismatched types 'const std::pair<_T1, _T2>' and 'char'
   10 |       if (C[j].value < C[j - 1]) {
      |                               ^
In file included from /usr/include/c++/14/bits/stl_algobase.h:67:
/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:10:31: note:   mismatched types 'const std::reverse_iterator<_Iterator>' and 'char'
   10 |       if (C[j].value < C[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:10:31: note:   mismatched types 'const std::reverse_iterator<_Iterator>' and 'char'
   10 |       if (C[j].value < C[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:10:31: note:   mismatched types 'const std::move_iterator<_IteratorL>' and 'char'
   10 |       if (C[j].value < C[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:10:31: note:   mismatched types 'const std::move_iterator<_IteratorL>' and 'char'
   10 |       if (C[j].value < C[j - 1]) {
      |                               ^
In file included from /usr/include/c++/14/bits/basic_string.h:47,
                 from /usr/include/c++/14/string:54,
                 from /usr/include/c++/14/bitset:52,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:52:
/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:10:31: note:   mismatched types 'std::basic_string_view<_CharT, _Traits>' and 'char'
   10 |       if (C[j].value < C[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:10:31: note:   mismatched types 'std::basic_string_view<_CharT, _Traits>' and 'char'
   10 |       if (C[j].value < C[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:10:31: note:   'Card' is not derived from 'std::basic_string_view<_CharT, _Traits>'
   10 |       if (C[j].value < C[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:10:31: note:   mismatched types 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>' and 'char'
   10 |       if (C[j].value < C[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 __cxx1