stack question

[pentiumPunk]

string something;

while(condition )
{
cin>> something;
node<T> *x;
x = new node<T> (something);
aStack.push(x);
}

i want to keep adding "something" to a stack, and top( ) and pop( ) it off,
but the problem is...... x is being overridden each time. how am i going to
manage the nodes in the stack ? thanks!

[Kristofer Pettijohn]

Re: stack question

pentiumPunk <Broox@triad.rr .com> wrote:[color=blue]
> string something;
>
> while(condition )
> {
> cin>> something;
> node<T> *x;
> x = new node<T> (something);
> aStack.push(x);
> }
>
> i want to keep adding "something" to a stack, and top( ) and pop( ) it off,
> but the problem is...... x is being overridden each time. how am i going to
> manage the nodes in the stack ? thanks![/color]

If what you want to keep adding to a stack is the variable 'something',
you may want to read up on containers... Try...

string something
stack<string> aStack; // a stack of strings

while (condition) {
cin >> something;
aStack.push(som ething);
}

Kristofer

[llewelly]

Re: stack question

"pentiumPun k" <Broox@triad.rr .com> writes:
[color=blue]
> string something;
>
> while(condition )
> {
> cin>> something;
> node<T> *x;
> x = new node<T> (something);
> aStack.push(x);
> }
>
> i want to keep adding "something" to a stack, and top( ) and pop( ) it off,
> but the problem is...... x is being overridden each time. how am i going to
> manage the nodes in the stack ? thanks![/color]

Maybe this:

#include<string >
#include<vector >
#include<stack>
#include<iostre am>
#include<ostrea m>

using namespace std;

int main()
{
string something;
stack<string> astack;
while(cin >> something)
{
astack.push(som ething);
}

cout << "\nDumping Stack." << endl;
while(astack.si ze())
{
cout << astack.size() - 1 << " : " << astack.top() << endl;
astack.pop();
}
}

is helpful?

If not, please explain the special features of your stack.

[pentiumPunk]

Re: stack question

this was very helpful. thanks!

[Kevin Goodsell]

Re: stack question

pentiumPunk wrote:
[color=blue]
> string something;
>
> while(condition )
> {
> cin>> something;
> node<T> *x;
> x = new node<T> (something);
> aStack.push(x);
> }
>
> i want to keep adding "something" to a stack, and top( ) and pop( ) it off,
> but the problem is...... x is being overridden each time.[/color]

"overridden "? How so? I know of nothing in C++ other than virtual
functions that can be overridden, and I don't see that happening here.

Perhaps you meant "overwritte n"? If that's the case, I would agree that
x is being overwritten each time, but I would disagree that this is a
problem. The value of x ceases to be important once you've pushed it
onto the stack.

-Kevin
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