strange operator problem

Hi, everyone!
Here is my simple test code:

int main()
{
    int b = 3, c = 5;
    int a = ( 1 == 1 || b > c ? b : c );    // sentence 1

    printf( "%d\n", a );
}

I thought the result should be 1, but is 3, if I change the sentence 1
like this,
int a = ( 1 == 0 || b > c ? b : c );   // the result is 5
or int a = ( 1 == 1 || ( b > c ? b : c ) );   // the result is 1

But I can't explain why, I guess it's a operator precedence level
problem.
Who can help me?
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