Add five additional functions to buttom code to print on C++ program? #include u

Question

 Add five additional functions to buttom code to print on C++ program?  #include  using namespace std;  double transaction; double currentBalance (5000);  char pickTransaction(void); void message (void); void deposit(void); void withdraw(void);   int main() {         cout << " Welcome to Your Bank!  " << endl;         char letter = pickTransaction();         if ((letter == 'D') || (letter == 'd'))         {                 deposit();         }         if ((letter == 'W') || (letter == 'w'))         {                 withdraw();         }         if ((letter == 'B') || (letter == 'b'))         {                 message();         }                  system ("pause");         return 0; }  char pickTransaction() {         char input;         do {                 cout << "What transaction would you like to perform today? Enter D for Deposit, W for Withdraw, or B to see your Balance  ";                      cin >> input;         }         while ((input != 'B') && (input != 'b') && (input != 'W') && (input != 'w')&& (input != 'D')&& (input != 'd'));         return input; }  void message (void) {         cout << " your new balance is: $" << currentBalance << endl; }  void deposit(void) {         cout << "How much do you want to deposit?  ";         cin >> transaction;         currentBalance = currentBalance + transaction;         message(); }  void withdraw(void) {         cout << "How much do you want to withdraw?  ";         cin >> transaction;         if (currentBalance <=0)         {cout << " Your balance is low; transaction cannot be performed.  ";}         else         {currentBalance = currentBalance - transaction;}         message(); } 

Explanation / Answer

//I ASSUME YOU WANT TO MAKE A MENU DRIVEN PROGRAM OUT OF THIS

#include <iostream>

using namespace std;

double transaction;
double currentBalance (5000);

char pickTransaction(void);
void message (void);
void deposit(void);
void withdraw(void);

int main()
{
while(true)
{
cout << " -----------Welcome to Your Bank!------------ " << endl;
char letter = pickTransaction();
if ((letter == 'D') || (letter == 'd'))
{
deposit();
}
else if ((letter == 'W') || (letter == 'w'))
{
withdraw();
}
else if ((letter == 'B') || (letter == 'b'))
{
message();
}
else if((letter=='E') || (letter=='e'))
{
break;
}

}

system ("pause");
return 0;
}

char pickTransaction()
{
char input;
do {
cout << "What transaction would you like to perform today? Enter D: Deposit Enter W: Withdraw Enter B: Current Balance Enter E: Exit Your choice: ";   
cin >> input;
}
while ((input != 'B') && (input != 'b') && (input != 'W') && (input != 'w')&& (input != 'D')&& (input != 'd') && (input != 'E')&& (input != 'e'));
return input;
}

void message (void)
{
cout << "Your Current balance is: $" << currentBalance << endl;
}

void deposit(void)
{
cout << "How much do you want to deposit? ";
cin >> transaction;
currentBalance = currentBalance + transaction;
message();
}

void withdraw(void)
{
cout << "How much do you want to withdraw? ";
cin >> transaction;
if (currentBalance <=0)
{cout << "Your balance is low; transaction cannot be performed. ";}
else
{currentBalance = currentBalance - transaction;}
message();
}

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