How can I declare and define multiple variables in one line using C++?

I always though that if I declare these three variables that they will all have the value 0

int column, row, index = 0;

But I find that only index equals zero & the others are junk like 844553 & 2423445.

How can I initialise all these variables to zero without declaring each variable on a new line?

int column = 0, row = 0, index = 0;

When you declare:

int column, row, index = 0;

Only index is set to zero.

However you can do the following:

int column, row, index;
column = index = row = 0;

But personally I prefer the following which has been pointed out.
It's a more readable form in my view.

int column = 0, row = 0, index = 0;

int column = 0;
int row = 0;
int index = 0;

As @Josh said, the correct answer is:

int column = 0,
    row = 0,
    index = 0;

You'll need to watch out for the same thing with pointers. This:

int* a, b, c;

Is equivalent to:

int *a;
int b;
int c;

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