$10\mathrm{.}2\mathrm{.}4$: Fix the bug from the preceding problem.

Fix the bug from the preceding problem.

Not all lines are useful.

How to use this tool $v$

Unused

void month$\_$end$()$;

if $($balance $<mtext\; id="EditorElement\_6278897"></mtext><mn\; id="EditorElement\_6278898">1</mn><mn\; id="EditorElement\_6278899">0</mn><mn\; id="EditorElement\_6278900">0</mn><mn\; id="EditorElement\_6278901">0</mn><mi\; id="EditorElement\_6278902">)</mi>$

$\{$

if $($get$\_$balance$()<mtext\; id="EditorElement\_6278925"></mtext><mn\; id="EditorElement\_6278926">1</mn><mn\; id="EditorElement\_6278927">0</mn><mn\; id="EditorElement\_6278928">0</mn><mn\; id="EditorElement\_6278929">0</mn><mi\; id="EditorElement\_6278930">)</mi>$

$\{$

$\}$

public:

double balance;

private:

class CheckingAccount

class CheckingAccount : public BankAccount

balance $=$ balance $-10$ ;

withdraw$(10)$;

main.cpp

#include