如何在C++中传递和返回数组

我正在制作一个简单的银行账户处理系统，并将账户信息保存为数组。然而，在传递账户信息时，我遇到了困难。我正在将文本文件中的数组读取到程序中，但这需要从读取文件的函数传递到处理提款的函数，存款和查看余额，传递的数组用于存储当前余额、透支的bool的替身以及最后3次提款和存款。

提取功能看起来像

float Withdraw()                                        //function handled withdraw requests
{
//variables
const int M = 3;                                //declare const int for withdraws
const int N = 8;                                //declare const int for account
float withdrawAmount = 0.0f;                    //used for internam laths in function   
float currentBalance = 0.0f;                    //used internally in function
float newBalance = 0.0f;                        //passed to write function
float withdraws[M];                             //passed to write function
float account[N];                               //passed and returned from read function
//call readFile function
readFile(account[N]);
cout << account[0];
//user interface
cout << "Withdraw opnened" << endl;                 //prompts user for input of a withdraw amount and displays current balance
cout << "Your Current Balance is: " << currentBalance << endl;
cout << "How Much Would You Like to Withdraw?" << endl;
cin >> withdrawAmount;
newBalance = currentBalance - withdrawAmount;           //calculates balance after withdraw
withdraws[2] = withdraws[1];
withdraws[1] = withdraws[0];
withdraws[0] = withdrawAmount;
system("PAUSE");
system("cls");
writeFile(newBalance, withdraws[M]);
Menu();
return 0;
}

读取文件的功能看起来像

float readFile(float account[8])
{
//variables
const int N = 8;
float accountRead[N];
//read file
ifstream file("floats.txt");
if (!file.is_open())
{
    cerr << "Error opening file" << endl;
    return 0;
}
for (int i = 0; i < N && file >> accountRead[i]; ++i)
    ;
if (file)
{
}
account = accountRead;
return account[N];
}

任何指导都将不胜感激，因为我花了几个小时试图研究这一点，但一无所获

float readFile(float account[8])

float readFile(float account[])

float readFile(float* account)

readFile(account[N]);

readFile(account);

return account[N];