c++ assigning a string parameter to a string

Question

I am trying to make a function that can change my account's pin number but having trouble finding the right way to assign the new one.

class Account;
class Account{

public:

    int accountNumber;
    char pin[5];
    double balance;
    void printInfo();
    void changeBalance(int n, char * p, double b);
    void changePin(int n, char * p, char * newPin);
};

void Account::changePin(int n, char * p, char * newPin)
{
    if((n == accountNumber) && (strcmp(p, pin) == 0))
    {
        //pin = newPin; //ERROR HERE
    }
}

am I supposed to not use an equal sign or use some function/pointer to assign a new pin? I am fairly new to c++ so I am still trying to figure out how to properly declare/assign things.

Answer 1

you should copy the content of the point , try strcpy(pin,newPin)

Answer 2

Never mind the class, the problem is how to assign a value to an array.

You can copy an array one element at a time:

for(unsigned int k=0; k<5; ++k)
  pin[k] = newPin[k];

You can take advantage of the fact that this is a char array, and use strncpy:

strncpy(pin, newPin, 5);

Or when you're tired of messing around with char[] you can look into std::string.

Answer 3

Try with this:

if(p!=NULL)
{
strcpy(this.pin,p);
}