Why compile error “Use of unassigned local variable”?

Question

My code is the following

int tmpCnt;  
if (name == \"Dude\")  
   tmpCnt++;  

Why is there an error Use of unassigned local variabl

Answer 1

A very dummy mistake but you can get this with a class too if you didn't instantiate it.

BankAccount account;
account.addMoney(5);

The above will produce the same error where as:

class BankAccount
{
    int balance = 0;
    public void addMoney(int amount)
    {
        balance += amount;
    }
}

Do the following to eliminate the error

BankAccount account = new BankAccount();
account.addMoney(5);