#include <iostream>
using namespace std;
//function prototype, returns double takes two double arguments
double withdraw(double balance, double amount);
//function prototype, returns double takes two double arguments
double deposit(double balance, double amount);
//function prototype, returns bool takes one double arguments
bool isOverdrawn(double balance);
int main()
{
double balance = 100.0;
// deposit two paychecks and try to withdraw
balance = deposit(balance, 500.0);
//deposits 700 into account and then returns updated balance, calls withdraw passing updated balance and 400 as arguments which //returns the updated balance less 400 and then checks if the balance is >=0 by calling withdraw.
//if isOverDrawn returns false then if executes
if ( !isOverdrawn(withdraw(deposit(balance, 700.0), 400.0)) )
{
balance = withdraw(deposit(balance, 700.0), 400.0); //deposits 700 and then withdraws 400 again and returns updated balance to balance variable
}
return 0;
}
//function definition, updates balance by subtracting amount withdrawn and returns remaining balance
double withdraw(double balance, double amount) {
balance -= amount;
return balance;
}
//function definition, updates balance by adding amount deposited and returns new balance
double deposit(double balance, double amount) {
balance += amount;
return balance;
}
//function definition, returns tru if balance is greater than or equal to 0 otherwise returns false
bool isOverdrawn(double balance) {
return balance < 0.0;
}
