Language: C++

#include<iostream>
#include<cmath>
#include<string>
#include<cstdlib>
#include<stdio.h>
#include<cctype>
#include<algorithm>
#include<string.h>
#include<iomanip>
using namespace std;
int main()
{
	string a,b;//??????????????????????????\????????????????????\????????????
	int sum=0;
		cin>>a;
		while(cin>>b)//????????\??¨cin????°±?????¨??????????????????????\????
		{
			if(b=="END_OF_TEXT")
			break;
			//??\????????°?????°
			//?°±?????¨??????????????????????????\?????¨for
			transform(b.begin(),b.end(),b.begin(),tolower);//??§?°??????¬???
		    
			

			int i=b.find(a[0]);//a?????????
			int k=0;
		
			for(i;i<b.length ();)//??????????????????????????°??¨?\????????????\??¨cin??´?§£?????????????°±????????????
			{
				
			if(b[i]==a[k])//?????????i?????\????????°b???0???????¬¬????????????,??????????????°??????????????°????¬¬???????????????????????¨???,??????i?????\????¬¬??????????????????
			{
			
				i++;
			k++;
			if(k==a.length())//????????°????????????????????????????????????.
			{
				sum++;
				break;
			}



			}
			else
			     break;
			}
		}
			



		cout<<sum<<endl;//???????????????????????¬???
		
		
		
		
		
		}
		
	
	
	
	

Compiler output:
a.cc: In function 'int main()':
a.cc:22:34: error: no matching function for call to 'transform(std::__cxx11::basic_string<char>::iterator, std::__cxx11::basic_string<char>::iterator, std::__cxx11::basic_string<char>::iterator, <unresolved overloaded function type>)'
   22 |                         transform(b.begin(),b.end(),b.begin(),tolower);//??§?°??????¬???
      |                         ~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/14/algorithm:61,
                 from a.cc:7:
/usr/include/c++/14/bits/stl_algo.h:4209:5: note: candidate: 'template<class _IIter, class _OIter, class _UnaryOperation> _OIter std::transform(_IIter, _IIter, _OIter, _UnaryOperation)'
 4209 |     transform(_InputIterator __first, _InputIterator __last,
      |     ^~~~~~~~~
/usr/include/c++/14/bits/stl_algo.h:4209:5: note:   template argument deduction/substitution failed:
a.cc:22:34: note:   couldn't deduce template parameter '_UnaryOperation'
   22 |                         transform(b.begin(),b.end(),b.begin(),tolower);//??§?°??????¬???
      |                         ~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algo.h:4247:5: note: candidate: 'template<class _IIter1, class _IIter2, class _OIter, class _BinaryOperation> _OIter std::transform(_IIter1, _IIter1, _IIter2, _OIter, _BinaryOperation)'
 4247 |     transform(_InputIterator1 __first1, _InputIterator1 __last1,
      |     ^~~~~~~~~
/usr/include/c++/14/bits/stl_algo.h:4247:5: note:   candidate expects 5 arguments, 4 provided
In file included from /usr/include/c++/14/algorithm:86:
/usr/include/c++/14/pstl/glue_algorithm_defs.h:156:1: note: candidate: 'template<class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _UnaryOperation> __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2> std::transform(_ExecutionPolicy&&, _ForwardIterator1, _ForwardIterator1, _ForwardIterator2, _UnaryOperation)'
  156 | transform(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last, _ForwardIterator2 __result,
      | ^~~~~~~~~
/usr/include/c++/14/pstl/glue_algorithm_defs.h:156:1: note:   candidate expects 5 arguments, 4 provided
/usr/include/c++/14/pstl/glue_algorithm_defs.h:162:1: note: candidate: 'template<class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _ForwardIterator, class _BinaryOperation> __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2> std::transform(_ExecutionPolicy&&, _ForwardIterator1, _ForwardIterator1, _ForwardIterator2, _ForwardIterator, _BinaryOperation)'
  162 | transform(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2,
      | ^~~~~~~~~
/usr/include/c++/14/pstl/glue_algorithm_defs.h:162:1: note:   candidate expects 6 arguments, 4 provided