I have completed my program, but when running the second test, the program's output does not match the expected output. Could you please help me resolve this issue? Thank you.

My code:

#include

#include

#include

#include

#include

$//$ Function to filter neighbors as per the problem statement

void FilterNeighbors$($const std::string& input, std::string& output$)\{$

for $($size$\_$t i $=0$; i $$ input.size$()$; i$++)\{$

char current $=$ input$[$i$]$;

bool include $=$ false;

$//$ Check neighbors

if $($i $>0$ && $($std::abs$($current $-$ input$[$i current $==$ input$[$i $-1]))\{$

include $=$ true;

$\}$

if $($i $$ input.size$()-1$ && $($std::abs$($current $-$ input$[$i current $==$ input$[$i $+1]))\{$

include $=$ true;

$\}$

$//$ If it is included in the output

if $($include$)\{$

output $+=$ current;

$\}$

$\}$

$\}$

int main$()\{$

std::vector results;

std::string line;

$//$ Read all input lines

while $($std::getline$($std::cin, line$))\{$

std::istringstream iss$($line$)$;

std::string word;

std::string line$\_$result;

$//$ Process each word in the line

while $($iss $>>$ word$)\{$

std::string word$\_$result;

FilterNeighbors$($word$,$ word$\_$result$)$;

if $(!$word$\_$result.empty$())\{$

line$\_$result $+=$ word$\_$result $+""$;

$\}$

$\}$

$//$ Trim any trailing spaces from the line result

if $(!$line$\_$result.empty$()$ && line$\_$result.back$()==\text{'}\text{'})\{$

line$\_$result.pop$\_$back$()$;

$\}$

$//$ Add the processed line result to the results vector

results.push$\_$back$($line$\_$result$)$;

$\}$

$//$ Output all results at once

for $($const auto& result : results$)\{$

if $($result$.$empty$())\{$

std::cout $$ std::endl;

$\}$ else $\{$

std::cout $$ result $$ std::endl;

$\}$

$\}$

return $0$;

$\}$

Error:

Example Input:

$23321$ gbsyfbjlbsadfoebw $./-$$$$!$&$\%$aAJ

$\{$ l $\}$:$$ : $>=$k$?$

Expected Output:

$23321$

blank line

blank line

$./$$$&$\%$

$\{$ I $\}>=$

my output:

$23321$blank.$/$$$&$\%$

$>=$

The output does not match the expected output