Language: C++

#include<bits/stdc++.h>
using namespace std;
typedef unsigned long long ull;
typedef long long ll;
#define rep(x) for(int i=0;i<x;i++)
#define reprev(x) for(int i=x-1;i>=0;i--)
#define repdef(x,n) for(int i=x;i<n;i++)
#define Debug(x) cout<<x<<"\n";
#define Debug2(x,y) cout<<x<<" "<<y<<"\n";
#define mod 1000000007
#define MAX 100005
int fast_exp(ll base,ll exp){
	if(exp==1){
		return base%mod;
	}
	if(exp&1){
		int ans=fast_exp(base,exp-1);
		return (base%mod*ans%mod)%mod;
	}else{
		int ans=fast_exp(base,exp/2);
		return (ans%mod*ans%mod)%mod;
	}
}
int fast_exp_itr(ll base,ll exp,ll p){
	ll ans=1;
	base=base%p;
	while(exp>0){
		if(exp&1){
			ans=((ans%p)*(base%p))%p;
		}
		exp>>=1;
		base=((base%p)*(base%p))%p;
	}
	return ans;
}
int euclid_gcd(int a,int b){
	if(b==0){
		return a;
	}
	return euclid_gcd(b,a%b);
}
bool comp(pair<int,pair<int,int>> a,pair<int,pair<int,int>> b){
	if(a.first==b.first){
		return a.second.second<b.second.second;
	}
	return a.first<b.first;
}
int main(int argc, char const *argv[])
{
	ios_base::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);
	// int t;
	// cin>>t;
	// while(t--){
	// 	ll n,k;
	// 	cin>>n>>k;
	// 	pair<int,pair<int,int>> arr[n];
	// 	rep(n){
	// 		cin>>arr[i].second.first>>arr[i].second.second>>arr[i].first;
	// 	}
	// 	sort(arr,arr+n,comp);

	// }
	string s;
	cin>>s;
	int arr[]={"Sunny","Cloudy","Rainy"};
	for(int i=0;i<3;i++){
		if(arr[i]==s){
			cout<<arr[(i+1)%3]<<"\n";
		}
	}
	return 0;
}

Compiler output:
a.cc: In function 'int main(int, const char**)':
a.cc:67:20: error: invalid conversion from 'const char*' to 'int' [-fpermissive]
   67 |         int arr[]={"Sunny","Cloudy","Rainy"};
      |                    ^~~~~~~
      |                    |
      |                    const char*
a.cc:67:28: error: invalid conversion from 'const char*' to 'int' [-fpermissive]
   67 |         int arr[]={"Sunny","Cloudy","Rainy"};
      |                            ^~~~~~~~
      |                            |
      |                            const char*
a.cc:67:37: error: invalid conversion from 'const char*' to 'int' [-fpermissive]
   67 |         int arr[]={"Sunny","Cloudy","Rainy"};
      |                                     ^~~~~~~
      |                                     |
      |                                     const char*
a.cc:69:26: error: no match for 'operator==' (operand types are 'int' and 'std::string' {aka 'std::__cxx11::basic_string<char>'})
   69 |                 if(arr[i]==s){
      |                    ~~~~~~^~~
      |                         |  |
      |                         |  std::string {aka std::__cxx11::basic_string<char>}
      |                         int
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:1103:5: note: candidate: 'template<class _BiIter> bool std::__cxx11::operator==(const sub_match<_BiIter>&, const sub_match<_BiIter>&)'
 1103 |     operator==(const sub_match<_BiIter>& __lhs, const sub_match<_BiIter>& __rhs)
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1103:5: note:   template argument deduction/substitution failed:
a.cc:69:28: note:   mismatched types 'const std::__cxx11::sub_match<_BiIter>' and 'int'
   69 |                 if(arr[i]==s){
      |                            ^
/usr/include/c++/14/bits/regex.h:1199:5: 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>&)'
 1199 |     operator==(const __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1199:5: note:   template argument deduction/substitution failed:
a.cc:69:28: note:   mismatched types 'std::__cxx11::__sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>' and 'int'
   69 |                 if(arr[i]==s){
      |                            ^
/usr/include/c++/14/bits/regex.h:1274:5: 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>&)'
 1274 |     operator==(const sub_match<_Bi_iter>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1274:5: note:   template argument deduction/substitution failed:
a.cc:69:28: note:   mismatched types 'const std::__cxx11::sub_match<_BiIter>' and 'int'
   69 |                 if(arr[i]==s){
      |                            ^
/usr/include/c++/14/bits/regex.h:1366:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator==(const typename std::iterator_traits<_Iter>::value_type*, const sub_match<_BiIter>&)'
 1366 |     operator==(typename iterator_traits<_Bi_iter>::value_type const* __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1366:5: note:   template argument deduction/substitution failed:
a.cc:69:28: note:   'std::string' {aka 'std::__cxx11::basic_string<char>'} is not derived from 'const std::__cxx11::sub_match<_BiIter>'
   69 |                 if(arr[i]==s){
      |                            ^
/usr/include/c++/14/bits/regex.h:1441:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator==(const sub_match<_BiIter>&, const typename std::iterator_traits<_Iter>::value_type*)'
 1441 |     operator==(const sub_match<_Bi_iter>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1441:5: note:   template argument deduction/substitution failed:
a.cc:69:28: note:   mismatched types 'const std::__cxx11::sub_match<_BiIter>' and 'int'
   69 |                 if(arr[i]==s){
      |                            ^
/usr/include/c++/14/bits/regex.h:1534:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator==(const typename std::iterator_traits<_Iter>::value_type&, const sub_match<_BiIter>&)'
 1534 |     operator==(typename iterator_traits<_Bi_iter>::value_type const& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1534:5: note:   template argument deduction/substitution failed:
a.cc:69:28: note:   'std::string' {aka 'std::__cxx11::basic_string<char>'} is not derived from 'const std::__cxx11::sub_match<_BiIter>'
   69 |                 if(arr[i]==s){
      |                            ^
/usr/include/c++/14/bits/regex.h:1613:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator==(const sub_match<_BiIter>&, const typename std::iterator_traits<_Iter>::value_type&)'
 1613 |     operator==(const sub_match<_Bi_iter>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1613:5: note:   template argument deduction/substitution failed:
a.cc:69:28: note:   mismatched types 'const std::__cxx11::sub_match<_BiIter>' and 'int'
   69 |                 if(arr[i]==s){
      |                            ^
/usr/include/c++/14/bits/regex.h:2186:5: note: candidate: 'template<class _Bi_iter, class _Alloc> bool std::__cxx11::operator==(const match_results<_BiIter, _Alloc>&, const match_results<_BiIter, _Alloc>&)'
 2186 |     operator==(const match_results<_Bi_iter, _Alloc>& __m1,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:2186:5: note:   template argument deduction/substitution failed:
a.cc:69:28: note:   mismatched types 'const std::__cxx11::match_results<_BiIter, _Alloc>' and 'int'
   69 |                 if(arr[i]==s){
      |                            ^
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:1033:5: note: candidate: 'template<class _T1, class _T2> constexpr bool std::operator==(const pair<_T1, _T2>&, const pair<_T1, _T2>&)'
 1033 |     operator==(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_pair.h:1033:5: note:   template argument deduction/substitution failed:
a.cc:69:28: note:   mismatched types 'const std::pair<_T1, _T2>' and 'int'
   69 |                 if(arr[i]==s){
      |                            ^
In file included from /usr/include/c++/14/bits/stl_algobase.h:67:
/usr/include/c++/14/bits/stl_iterator.h:441:5: note: candidate: 'template<class _Iterator> constexpr bool std::operator==(const reverse_iterator<_Iterator>&, const reverse_iterator<_Iterator>&)'
  441 |     operator==(const reverse_iterator<_Iterator>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:441:5: note:   template argument deduction/substitution failed:
a.cc:69:28: note:   mismatched types 'const std::reverse_iterator<_Iterator>' and 'int'
   69 |                 if(arr[i]==s){
      |                            ^
/usr/include/c++/14/bits/stl_iterator.h:486:5: note: candidate: 'template<class _IteratorL, class _IteratorR> constexpr bool std::operator==(const reverse_iterator<_Iterator>&, const reverse_iterator<_IteratorR>&)'
  486 |     operator==(const reverse_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:486:5: note:   template argument deduction/substitution failed:
a.cc:69:28: note:   mismatched types 'const std::reverse_iterator<_Iterator>' and 'int'
   69 |                 if(arr[i]==s){
      |                            ^
/usr/include/c++/14/bits/stl_iterator.h:1667:5: note: candidate: 'template<class _IteratorL, class _IteratorR> constexpr bool std::operator==(const move_iterator<_IteratorL>&, const move_iterator<_IteratorR>&)'
 1667 |     operator==(const move_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:1667:5: note:   template argument deduction/substitution failed:
a.cc:69:28: note:   mismatched types 'const std::move_iterator<_IteratorL>' and 'int'
   69 |                 if(arr[i]==s){
      |                            ^
/usr/include/c++/14/bits/stl_iterator.h:1737:5: note: candidate: 'template<class _Iterator> constexpr bool std::operator==(const move_iterator<_IteratorL>&, const move_iterator<_IteratorL>&)'
 1737 |     operator==(const move_iterator<_Iterator>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:1737:5: note:   template argument deduction/substitution failed:
a.cc:69:28: note:   mismatched types 'const std::move_iterator<_IteratorL>' and 'int'
   69 |                 if(arr[i]==s){
      |                            ^
In file included from /usr/include/c++/14/bits/char_traits.h:42,
                 from /usr/include/c++/14/string:42,
                 from /usr/include/c++/14/bitset:52,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:52:
/usr/include/c++/14/bits/postypes.h:192:5: note: candidate: 'template<class _StateT> bool std::operator==(const fpos<_StateT>&, const fpos<_StateT>&)'
  192 |     operator==(const fpos<_StateT>& __lhs, const fpos<_StateT>& __rhs)
      |     ^~~~~~~~
/usr/include/c++/14/bits/postypes.h:192:5: note:   template argument deduction/substitution failed:
a.cc:69:28: note:   mismatched types 'const std::fpos<_StateT>' and 'int'
   69 |                 if(arr[i]==s){
      |                            ^
In file included from /usr/include/c++/14/string:43:
/usr/include/c++/14/bits/allocator.h:235:5: note: candidate: 'template<class _T1, class _T2> bool std::operator==(const allocator<_CharT>&, const allocator<_T2>&)'
  235 |     operator==(const allocator<_T1>&, const allocator<_T2>&)
      |     ^~~~~~~~
/usr/include/c++/14/bits/allocator.h:235:5: note:   template argument deduction/substitution failed:
a.cc:69:28: note:   mismatched types 'const std::allocator<_CharT>' and 'int'
   69 |