cout question

[coder]

I'm new to C++ and currently I'm trying to make my own stack.

This is my main() function:

int main()
{
Stack<intiStack ;

iStack.push(10) ;
iStack.push(13) ;
iStack.push(12) ;

cout << iStack.pop() << endl;
cout << iStack.pop() << endl;
cout << iStack.pop() << endl;

return 0;
}

When I run the program, I get the output as:
12
13
10

which indicates that the program is working OK.


However, when I change the 3 "popping" lines to the following:

cout << iStack.pop() << endl << iStack.pop() << endl << iStack.pop()
<< endl;

the output gets reversed:
10
13
12

Could anyone explain why is that so?