Language: C++

#include<iostream>
using namespace std;

struct card{
    char suit;
    int value;
};

void bubbleSort(card a[],int n){
    int flag=1;
    for(int i=0;i<n-1;++i){
        if(!flag)break;
        flag=0;
        for(int j=n-1;j>i;j--){
            if(a[j].value<a[j-1].value){
                flag=1;
                card t=a[j];
                a[j]=a[j-1];
                a[j-1]=t;
            }
        }
    }
}

void selectionSort(card c[],int n){
   int min;
    for(int i=0;i<n-1;++i){
        min=i;
        for(int j=i+1;j<n;++j){
            if(c[j].value<c[min].value)
                min=j;
        }
        if(min!=i){card t=c[i];c[i]=c[min];c[min]=t;}
    }
}

bool isStable(card c1[],card c2[],int n){
    for(int i=0;i<n;++i)
      if(c1[i]!=c2[i])return false;
    
    return true;
}
void print(card c[],n){
    for(int i=0;i<n;i++){
        if(i>0)cout<<' ';
        cout<<c[i].suit<<c[i].value;
    }
    cout<<endl;
}
int main(){
    int n;
    cin>>n;
    card c1[36],c2[36];
    for(int i=0;i<n;i++){
        cin>>c1.suit>>c1.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 'bool isStable(card*, card*, int)':
a.cc:39:15: error: no match for 'operator!=' (operand types are 'card' and 'card')
   39 |       if(c1[i]!=c2[i])return false;
      |          ~~~~~^~~~~~~
      |              |      |
      |              card   card
In file included from /usr/include/c++/14/iosfwd:42,
                 from /usr/include/c++/14/ios:40,
                 from /usr/include/c++/14/ostream:40,
                 from /usr/include/c++/14/iostream:41,
                 from a.cc:1:
/usr/include/c++/14/bits/postypes.h:197:5: note: candidate: 'template<class _StateT> bool std::operator!=(const fpos<_StateT>&, const fpos<_StateT>&)'
  197 |     operator!=(const fpos<_StateT>& __lhs, const fpos<_StateT>& __rhs)
      |     ^~~~~~~~
/usr/include/c++/14/bits/postypes.h:197:5: note:   template argument deduction/substitution failed:
a.cc:39:21: note:   'card' is not derived from 'const std::fpos<_StateT>'
   39 |       if(c1[i]!=c2[i])return false;
      |                     ^
In file included from /usr/include/c++/14/string:43,
                 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:
/usr/include/c++/14/bits/allocator.h:243:5: note: candidate: 'template<class _T1, class _T2> bool std::operator!=(const allocator<_CharT>&, const allocator<_T2>&)'
  243 |     operator!=(const allocator<_T1>&, const allocator<_T2>&)
      |     ^~~~~~~~
/usr/include/c++/14/bits/allocator.h:243:5: note:   template argument deduction/substitution failed:
a.cc:39:21: note:   'card' is not derived from 'const std::allocator<_CharT>'
   39 |       if(c1[i]!=c2[i])return false;
      |                     ^
In file included from /usr/include/c++/14/string:48:
/usr/include/c++/14/bits/stl_iterator.h:455:5: note: candidate: 'template<class _Iterator> constexpr bool std::operator!=(const reverse_iterator<_Iterator>&, const reverse_iterator<_Iterator>&)'
  455 |     operator!=(const reverse_iterator<_Iterator>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:455:5: note:   template argument deduction/substitution failed:
a.cc:39:21: note:   'card' is not derived from 'const std::reverse_iterator<_Iterator>'
   39 |       if(c1[i]!=c2[i])return false;
      |                     ^
/usr/include/c++/14/bits/stl_iterator.h:500:5: note: candidate: 'template<class _IteratorL, class _IteratorR> constexpr bool std::operator!=(const reverse_iterator<_Iterator>&, const reverse_iterator<_IteratorR>&)'
  500 |     operator!=(const reverse_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:500:5: note:   template argument deduction/substitution failed:
a.cc:39:21: note:   'card' is not derived from 'const std::reverse_iterator<_Iterator>'
   39 |       if(c1[i]!=c2[i])return false;
      |                     ^
/usr/include/c++/14/bits/stl_iterator.h:1686:5: note: candidate: 'template<class _IteratorL, class _IteratorR> constexpr bool std::operator!=(const move_iterator<_IteratorL>&, const move_iterator<_IteratorR>&)'
 1686 |     operator!=(const move_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:1686:5: note:   template argument deduction/substitution failed:
a.cc:39:21: note:   'card' is not derived from 'const std::move_iterator<_IteratorL>'
   39 |       if(c1[i]!=c2[i])return false;
      |                     ^
/usr/include/c++/14/bits/stl_iterator.h:1753:5: note: candidate: 'template<class _Iterator> constexpr bool std::operator!=(const move_iterator<_IteratorL>&, const move_iterator<_IteratorL>&)'
 1753 |     operator!=(const move_iterator<_Iterator>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:1753:5: note:   template argument deduction/substitution failed:
a.cc:39:21: note:   'card' is not derived from 'const std::move_iterator<_IteratorL>'
   39 |       if(c1[i]!=c2[i])return false;
      |                     ^
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:1052:5: note: candidate: 'template<class _T1, class _T2> constexpr bool std::operator!=(const pair<_T1, _T2>&, const pair<_T1, _T2>&)'
 1052 |     operator!=(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_pair.h:1052:5: note:   template argument deduction/substitution failed:
a.cc:39:21: note:   'card' is not derived from 'const std::pair<_T1, _T2>'
   39 |       if(c1[i]!=c2[i])return false;
      |                     ^
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:651:5: note: candidate: 'template<class _CharT, class _Traits> constexpr bool std::operator!=(basic_string_view<_CharT, _Traits>, basic_string_view<_CharT, _Traits>)'
  651 |     operator!=(basic_string_view<_CharT, _Traits> __x,
      |     ^~~~~~~~
/usr/include/c++/14/string_view:651:5: note:   template argument deduction/substitution failed:
a.cc:39:21: note:   'card' is not derived from 'std::basic_string_view<_CharT, _Traits>'
   39 |       if(c1[i]!=c2[i])return false;
      |                     ^
/usr/include/c++/14/string_view:658:5: note: candidate: 'template<class _CharT, class _Traits> constexpr bool std::operator!=(basic_string_view<_CharT, _Traits>, __type_identity_t<basic_string_view<_CharT, _Traits> >)'
  658 |     operator!=(basic_string_view<_CharT, _Traits> __x,
      |     ^~~~~~~~
/usr/include/c++/14/string_view:658:5: note:   template argument deduction/substitution failed:
a.cc:39:21: note:   'card' is not derived from 'std::basic_string_view<_CharT, _Traits>'
   39 |       if(c1[i]!=c2[i])return false;
      |                     ^
/usr/include/c++/14/string_view:666:5: note: candidate: 'template<class _CharT, class _Traits> constexpr bool std::operator!=(__type_identity_t<basic_string_view<_CharT, _Traits> >, basic_string_view<_CharT, _Traits>)'
  666 |     operator!=(__type_identity_t<basic_string_view<_CharT, _Traits>> __x,
      |     ^~~~~~~~
/usr/include/c++/14/string_view:666:5: note:   template argument deduction/substitution failed:
a.cc:39:21: note:   'card' is not derived from 'std::basic_string_view<_CharT, _Traits>'
   39 |       if(c1[i]!=c2[i])return false;
      |                     ^
/usr/include/c++/14/bits/basic_string.h:3833:5: 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>&)'
 3833 |     operator!=(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3833:5: note:   template argument deduction/substitution failed:
a.cc:39:21: note:   'card' is not derived from 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>'
   39 |       if(c1[i]!=c2[i])return false;
      |                     ^
/usr/include/c++/14/bits/basic_string.h:3847:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> bool std::operator!=(const _CharT*, const __cxx11::basic_string<_CharT, _Traits, _Allocator>&)'
 3847 |     operator!=(const _CharT* __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3847:5: note:   template argument deduction/substitution failed:
a.cc:39:21: note:   mismatched types 'const _CharT*' and 'card'
   39 |       if(c1[i]!=c2[i])return false;
      |                     ^
/usr/include/c++/14/bits/basic_string.h:3860:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> bool std::operator!=(const __cxx11::basic_string<_CharT, _Traits, _Allocator>&, const _CharT*)'
 3860 |     operator!=(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3860:5: note:   template argument deduction/substitution failed:
a.cc:39:21: note:   'card' is not derived from 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>'
   39 |       if(c1[i]!=c2[i])return false;
      |                     ^
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:2613:5: note: candidate: 'template<class ... _TElements, class ... _UElements> constexpr bool std::operator!=(const tuple<_UTypes ...>&, const tuple<_Elements ...>&)'
 2613 |     operator!=(const tuple<_TElements...>& __t,
      |     ^~~~~~~~
/usr/include/c++/14/tuple:2613:5: note:   template argument deduction/substitution failed:
a.cc:39:21: note:   'card' is not derived from 'const std::tuple<_UTypes ...>'
   39 |       if(c1[i]!=c2[i])return false;
      |                     ^
In file included from /usr/include/c++/14/bits/locale_facets.h:48,
                 from /usr/include/c++/14/bits/basic_ios.h:37,
                 from /usr/include/c++/14/ios:46:
/usr/include/c++/14/bits/streambuf_iterator.h:242:5: note: candidate: 'template<class _CharT, class _Traits> bool std::operator!=(const istreambuf_iterator<_CharT, _Traits>&, const istreambuf_iterator<_CharT, _Traits>&)'
  242 |     operator!=(const istreambuf_iterator<_CharT, _Traits>& __a,
      |     ^~~~~~~~
/usr/include/c++/14/bits/streambuf_iterator.h:242:5: note:   template argument deduction/substitution failed:
a.cc:39:21: note:   'card' is not derived from 'const std::istreambuf_iterator<_CharT, _Traits>'
   39 |       if(c1[i]!=c2[i])return false;
      |                     ^
In file included from /usr/include/c++/14/bits/ios_base.h:46:
/usr/include/c++/14/system_error:525:3: note: candidate: 'bool std::operator!=(const error_code&, const error_code&)'
  525 |   operator!=(const error_code& __lhs, const error_code& __rhs) noexcept
      |   ^~~~~~~~
/usr/include/c++/14/system_error:525:32: note:   no known conversion for argument 1 from 'card' to 'const std::error_code&'
  525 |   operator!=(const error_code& __lhs, const error_code& __rhs) noexcept
      |              ~~~~~~~~~~~~~~~~~~^~~~~
/usr/include/c++/14/system_error:530:3: note: candidate: 'bool std::operator!=(