make it better so that my second phrase outputs this

Second phrase: $"$Be cool"

Encoded text: $"$Tj opiu"

not like what mine is outputting

Second phrase: $"$Be cool"

Encoded text: $"$Gq dixd"

void VigenereForwardIterator::encodeCurrentChar$()$ noexcept $\{$

if $($fKeys $!=$ fKeys.end$())\{$

if $($fIndex $>=$ fSource.length$())\{$

fCurrentChar $=\text{'}\backslash 0\text{'}$;

return;

$\}$

char messageChar $=$ fSource$[$fIndex$]$;

if $($std::isalpha$($messageChar$))\{$

char keywordChar $=*$fKeys;

if $(!$std::isalpha$($keywordChar$)||!$std::isupper$($keywordChar$))\{$

fCurrentChar $=$ messageChar;

return;

$\}$

size$\_$t row $=$ keywordChar $-\text{'}$A$\text{'}$;

size$\_$t column $=$ std::toupper$($messageChar$)-\text{'}$A$\text{'}$;

if $($column $<$ CHARACTERS$)\{$

char encodedChar $=$ fMappingTable$[$row$][$column$]$;

if $($std::islower$($messageChar$))\{$

encodedChar $=$ std::tolower$($encodedChar$)$;

$\}$

fCurrentChar $=$ encodedChar;

$++$fKeys;

if $($fKeys $==$ fKeys.end$())\{$

fKeys $=$ fKeys.begin$()$;

$\}$

$\}$

else $\{$

fCurrentChar $=$ messageChar;

$\}$

$\}$

else $\{$

fCurrentChar $=$ messageChar;

$\}$

$\}$

$\}$

void VigenereForwardIterator::decodeCurrentChar$()$ noexcept $\{$

if $($fKeys $!=$ fKeys.end$())\{$

if $($fIndex $>=$ fSource.length$())\{$

fCurrentChar $=\text{'}\backslash 0\text{'}$;

return;

$\}$

char messageChar $=$ fSource$[$fIndex$]$;

if $($std::isalpha$($messageChar$))\{$

char keywordChar $=*$fKeys;

if $(!$std::isalpha$($keywordChar$)||!$std::isupper$($keywordChar$))\{$

fCurrentChar $=$ messageChar;

return;

$\}$

size$\_$t row $=$ keywordChar $-\text{'}$A$\text{'}$;

size$\_$t column $=0$;

while $($column $<$ CHARACTERS && fMappingTable$[$row$][$column$]!=$ std::toupper$($messageChar$))\{$

$++$column;

$\}$

if $($column $<$ CHARACTERS$)\{$

char decodedChar $=\text{'}$A$\text{'}+$ column;

if $($std::islower$($messageChar$))\{$

decodedChar $=$ std::tolower$($decodedChar$)$;

$\}$

fCurrentChar $=$ decodedChar;

$++$fKeys;

if $($fKeys $==$ fKeys.end$())\{$

fKeys $=$ fKeys.begin$()$;

$\}$

$\}$

else $\{$

fCurrentChar $=$ messageChar;

$\}$

$\}$

else $\{$

fCurrentChar $=$ messageChar;

$\}$

$\}$

$\}$