$//$ Student ID: $20537016//$ TODO $-$ Replace the number above with your actual student ID $//$

#ifndef Stacks$\_$h

#define Stacks$\_$h

#include

#include

#include

class Stack$\_$Int $\{$

private:

std::vector $\_$data;

public:

$//$ No explicit constructor or destructor

size$\_$t size$()$ const $\{$ return $\_$data.size$()$; $\}$

bool is$\_$empty$()$ const $\{$ return $(\_$data.size$()==0)$; $\}$

void push$($int val$)\{\_$data.push$\_$back$($val$)$; $\}$

int top$($bool& success$)$ const $\{$

if $($is$\_$empty$())\{$

success $=$ false;

return $0$;

$\}$ else $\{$

success $=$ true;

return $\_$data.back$()$;

$\}$

$\}$

bool pop$()\{$

if $($is$\_$empty$())$

return false;

$\_$data.pop$\_$back$()$;

return true;

$\}$

bool pop$($int& val$)\{$

if $($is$\_$empty$())\{$

val $=0$;

return false;

$\}$

val $=\_$data.back$()$;

$\_$data.pop$\_$back$()$;

return true;

$\}$

std::string to$\_$string$()$ const $\{$

std::stringstream ss;

ss $<<$ "Stack $("<<$ size$()<<"$ elements$)$:$"<<$ std::endl;

size$\_$t count $=$ std::min$($size$(),$ static$\_$cast$(10))$;

for $($size$\_$t i $=0$; i $<$ count; $++$i$)\{$

ss $<<\_$data$[$size$()-1-$ i$]<<$ std::endl;

$\}$

if $($size$()>10)\{$

ss $<<"......"<<$ std::endl;

$\}$

ss $<<$ "Elements, if listed above, are in increasing order of age." $<<$ std::endl;

return ss$.$str$()$;

$\}$

$//$ Don't remove the following line

friend class Tests;

$\}$;

class Stack$\_$String $\{$

private:

std::vector $\_$data;

public:

$//$ No explicit constructor or destructor

size$\_$t size$()$ const $\{$ return $\_$data.size$()$; $\}$

bool is$\_$empty$()$ const $\{$ return $(\_$data.size$()==0)$; $\}$

void push$($std::string val$)\{\_$data.push$\_$back$($val$)$; $\}$

std::string top$($bool& success$)$ const $\{$

if $($is$\_$empty$())\{$

success $=$ false;

return $""$;

$\}$ else $\{$

success $=$ true;

return $\_$data.back$()$;

$\}$

$\}$

bool pop$()\{$

if $($is$\_$empty$())$

return false;

$\_$data.pop$\_$back$()$;

return true;

$\}$

bool pop$($std::string& val$)\{$

if $($is$\_$empty$())\{$

val $=""$;

return false;

$\}$

val $=\_$data.back$()$;

$\_$data.pop$\_$back$()$;

return true;

$\}$

std::string to$\_$string$()$ const $\{$

std::stringstream ss;

ss $<<$ "Stack $("<<$ size$()<<"$ elements$)$:$"<<$ std::endl;

size$\_$t count $=$ std::min$($size$(),$ static$\_$cast$(10))$;

for $($size$\_$t i $=0$; i $<$ count; $++$i$)\{$

ss $<<\_$data$[$size$()-1-$ i$]<<$ std::endl;

$\}$

if $($size$()>10)\{$

ss $<<"......"<<$ std::endl;

$\}$

ss $<<$ "Elements, if listed above, are in increasing order of age." $<<$ std::endl;

return ss$.$str$()$;

$\}$

$//$ Don't remove the following line

friend class Tests;

$\}$;

#endif $/*$ Stacks$\_$h $*/$ i use this code but stiil i got the error please give me correct code Hooray! $2$ Rogues from Rombarchia befriended $($Basic Stack$)$

Hooray! $2$ Light Emitting Weevils adopted $($Push$)$

Hooray! $3$ Qubits of Inner Space leased $($Top$)$

Hooray! $2$ Golden Rhinoceri won in a duel $($Pop $1)$

Hooray! $2$ Sprinchots of Smoltassium insufflated... dangerous! $($Pop $2)$

Checkpoint failed. Your to$\_$string said:

Stack $(1723$ elements$)$:

$2076646061$

$1630012730$

$1047190855$

$1858576442$

$304434849$

$889303625$

$1925144872$

$1642872926$

$1155427214$

$685444788$

$......$

Elements, if listed above, are in increasing order of age.

But mine said:

Stack $(1723$ elements$)$:

$2076646061$

$1630012730$

$1047190855$

$1858576442$

$304434849$

$889303625$

$1925144872$

$1642872926$

$1155427214$

$685444788$

$...$

Elements, if listed above, are in increasing order of age.

Here is your stack:

Stack $(1723$ elements$)$:

$2076646061$

$1630012730$

$1047190855$

$1858576442$

$304434849$

$889303625$

$1925144872$

$1642872926$

$1155427214$

$685444788$

$31579160$

$359501533$

$...$

Elements, if listed above, are in increasing order of age.

And here is mine:

Stack $(1723$ elements$)$:

$2076646061$

$1630012730$

$1047190855$

$1858576442$

$304434849$

$889303625$

$1925144872$

$1642872926$

$1155427214$

$685444788$

$...$

Elements, if listed above, are in increasing order of age.

You think that's it$?$

& this error is coming please give me correct code this is my $3$rd time i am posting this question