Language: C++

#include<stdio.h>
#include<algorithm>
#include<iostream>
using namespace std;
struct Card{ char suit,value; };

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

void SelectionSort(struct Card C[],int n){
	Card tmp;
	for (int i = 0; i < n; i++){
		int min = i;
		for (int j = i; j < n; j++){
			if (C[j].value < C[min].value){
				min=j
			}
		}
		tmp = C[j]; C[j] = C[j - 1]; C[j - 1] = tmp;
	}
}

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 C1,struct 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[100], C2[100];
	int n;
	char ch;
	cin >> n;
	for (int i = 0; i < n; i++){
		cin >> C1[i].suit >> C1[i].value;
	}
	for (int i = 0; i < n; i++)
		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:11:40: error: no match for 'operator>' (operand types are 'char' and 'Card')
   11 |                         if (C[j].value > C[j - 1]){
      |                             ~~~~~~~~~~ ^ ~~~~~~~~
      |                                  |              |
      |                                  char           Card
In file included from /usr/include/c++/14/bits/stl_algobase.h:64,
                 from /usr/include/c++/14/algorithm:60,
                 from a.cc:2:
/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:11:49: note:   mismatched types 'const std::pair<_T1, _T2>' and 'char'
   11 |                         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: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:11:49: note:   mismatched types 'const std::reverse_iterator<_Iterator>' and 'char'
   11 |                         if (C[j].value > C[j - 1]){
      |                                                 ^
/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:11:49: note:   mismatched types 'const std::reverse_iterator<_Iterator>' and 'char'
   11 |                         if (C[j].value > C[j - 1]){
      |                                                 ^
/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:11:49: note:   mismatched types 'const std::move_iterator<_IteratorL>' and 'char'
   11 |                         if (C[j].value > C[j - 1]){
      |                                                 ^
/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:11:49: note:   mismatched types 'const std::move_iterator<_IteratorL>' and 'char'
   11 |                         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/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:3:
/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:11:49: note:   mismatched types 'std::basic_string_view<_CharT, _Traits>' and 'char'
   11 |                         if (C[j].value > C[j - 1]){
      |                                                 ^
/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:11:49: note:   mismatched types 'std::basic_string_view<_CharT, _Traits>' and 'char'
   11 |                         if (C[j].value > C[j - 1]){
      |                                                 ^
/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:11:49: note:   'Card' is not derived from 'std::basic_string_view<_CharT, _Traits>'
   11 |                         if (C[j].value > C[j - 1]){
      |                                                 ^
/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:11:49: note:   mismatched types 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>' and 'char'
   11 |                         if (C[j].value > C[j - 1]){
      |                                                 ^
/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:11:49: note:   mismatched types 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>' and 'char'
   11 |                         if (C[j].value > C[j - 1]){
      |                                                 ^
/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:11:49: note:   mismatched types 'const _CharT*' and 'char'
   11 |                         if (C[j].value > C[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: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:11:49: note:   mismatched types 'const std::tuple<_UTypes ...>' and 'char'
   11 |                         if (C[j].value > C[j - 1]){
      |                                                 ^
a.cc: In function 'void SelectionSort(Card*, int)':
a.cc:24:38: error: expected ';' before '}' token
   24 |                                 min=j
      |                                      ^
      |                                      ;
   25 |                         }
      |                         ~             
a.cc:27:25: error: 'j' was not declared in this scope
   27 |                 tmp = C[j]; C[j] = C[j - 1]; C[j - 1] = tmp;
      |                         ^
a.cc: At global scope:
a.cc:40:15: error: '<anonymous>' has incomplete type
   40 | bool isStable(struct C1,struct C2,int n){
      |               ^~~~~~~~~
a.cc:40:22: note: forward declaration of 'struct C1'
   40 | bool isStable(struct C1,struct C2,int n){
      |                      ^~
a.cc:40:25: error: '<anonymous>' has incomplete type
   40 | bool isStable(struct C1,struct C2,int n){
      |                         ^~~~~~~~~
a.cc:40:32: note: forward declaration of 'struct C2'
   40 | bool isStable(struct C1,struct C2,int n){
      |                                ^~
a.cc: In function 'bool isStable(C1, C2, int)':
a.cc:42:23: error: expected unqualified-id before '[' token
   42 |                 if (C1[i].suit != C2[i].suit)return false;
      |                       ^
a.cc: In function 'int main()':
a.cc:62:22: error: parameter 1 of 'bool isStable(C1, C2, int)' has incomplete type 'C1'
   62 |         if (isStable(C1, C2, n)){
      |                      ^~
a.cc:40:15: note:   declared here
   40 | bool isStable(struct C1,struct C2,int n){
      |               ^~~~~~~~~