Stack in C++ STL - Sanfoundry

This C++ Program demonstrates implementation of Stack in STL.

Here is source code of the C++ Program to demonstrate Stack in STL. The C++ program is successfully compiled and run on a Linux system. The program output is also shown below.

```
/*
```

 * C++ Program to Implement Stack in Stl

```
 */
```
```
#include <iostream>
```
```
#include <stack>
```
```
#include <string>
```
```
#include <cstdlib>
```
```
using namespace std;
```
```
int main()
```
```
{
```
```
    stack<int> st;
```
```
    int choice, item;
```
```
    while (1)
```
```
    {
```

        cout<<"\n---------------------"<<endl;

        cout<<"Stack Implementation in Stl"<<endl;

        cout<<"\n---------------------"<<endl;

        cout<<"1.Insert Element into the Stack"<<endl;

        cout<<"2.Delete Element from the Stack"<<endl;

```
	cout<<"3.Size of the Stack"<<endl;
```

        cout<<"4.Top Element of the Stack"<<endl;

```
        cout<<"5.Exit"<<endl;
```
```
        cout<<"Enter your Choice: ";
```
```
        cin>>choice;
```
```
        switch(choice)
```
```
        {
```
```
        case 1:
```

            cout<<"Enter value to be inserted: ";

```
            cin>>item;
```
```
            st.push(item);
```
```
            break;
```
```
        case 2:
```
```
            item = st.top();
```
```
            st.pop();
```

	    cout<<"Element "<<item<<" Deleted"<<endl;

```
            break;
```
```
        case 3:
```
```
	    cout<<"Size of the Queue: ";
```
```
	    cout<<st.size()<<endl;
```
```
            break;
```
```
        case 4:
```

	    cout<<"Top Element of the Stack: ";

```
	    cout<<st.top()<<endl;
```
```
            break;
```
```
        case 5:
```
```
            exit(1);
```
```
	    break;
```
```
        default:
```
```
            cout<<"Wrong Choice"<<endl;
```
```
        }
```
```
    }
```
```
    return 0;
```
```
}
```

$ g++ stack.cpp
$ a.out
---------------------
Stack Implementation in Stl
 
---------------------
1.Insert Element into the Stack
2.Delete Element from the Stack
3.Size of the Stack
4.Top Element of the Stack
5.Exit
Enter your Choice: 1
Enter value to be inserted: 2
 
---------------------
Stack Implementation in Stl
 
---------------------
1.Insert Element into the Stack
2.Delete Element from the Stack
3.Size of the Stack
4.Top Element of the Stack
5.Exit
Enter your Choice: 1
Enter value to be inserted: 3
 
---------------------
Stack Implementation in Stl
 
---------------------
1.Insert Element into the Stack
2.Delete Element from the Stack
3.Size of the Stack
4.Top Element of the Stack
5.Exit
Enter your Choice: 1
Enter value to be inserted: 4
 
---------------------
Stack Implementation in Stl
 
---------------------
1.Insert Element into the Stack
2.Delete Element from the Stack
3.Size of the Stack
4.Top Element of the Stack
5.Exit
Enter your Choice: 1
Enter value to be inserted: 5
 
---------------------
Stack Implementation in Stl
 
---------------------
1.Insert Element into the Stack
2.Delete Element from the Stack
3.Size of the Stack
4.Top Element of the Stack
5.Exit
Enter your Choice: 1
Enter value to be inserted: 6
 
---------------------
Stack Implementation in Stl
 
---------------------
1.Insert Element into the Stack
2.Delete Element from the Stack
3.Size of the Stack
4.Top Element of the Stack
5.Exit
Enter your Choice: 4
Top Element of the Stack: 6
 
---------------------
Stack Implementation in Stl
 
---------------------
1.Insert Element into the Stack
2.Delete Element from the Stack
3.Size of the Stack
4.Top Element of the Stack
5.Exit
Enter your Choice: 3
Size of the Queue: 5
 
---------------------
Stack Implementation in Stl
 
---------------------
1.Insert Element into the Stack
2.Delete Element from the Stack
3.Size of the Stack
4.Top Element of the Stack
5.Exit
Enter your Choice: 2
Element 6 Deleted
 
---------------------
Stack Implementation in Stl
 
---------------------
1.Insert Element into the Stack
2.Delete Element from the Stack
3.Size of the Stack
4.Top Element of the Stack
5.Exit
Enter your Choice: 4
Top Element of the Stack: 5
 
---------------------
Stack Implementation in Stl
 
---------------------
1.Insert Element into the Stack
2.Delete Element from the Stack
3.Size of the Stack
4.Top Element of the Stack
5.Exit
Enter your Choice: 3
Size of the Queue: 4
 
---------------------
Stack Implementation in Stl
 
---------------------
1.Insert Element into the Stack
2.Delete Element from the Stack
3.Size of the Stack
4.Top Element of the Stack
5.Exit
Enter your Choice: 1
Enter value to be inserted: 8
 
---------------------
Stack Implementation in Stl
 
---------------------
1.Insert Element into the Stack
2.Delete Element from the Stack
3.Size of the Stack
4.Top Element of the Stack
5.Exit
Enter your Choice: 4
Top Element of the Stack: 8
 
---------------------
Stack Implementation in Stl
 
---------------------
1.Insert Element into the Stack
2.Delete Element from the Stack
3.Size of the Stack
4.Top Element of the Stack
5.Exit
Enter your Choice: 3
Size of the Queue: 5
 
---------------------
Stack Implementation in Stl
 
---------------------
1.Insert Element into the Stack
2.Delete Element from the Stack
3.Size of the Stack
4.Top Element of the Stack
5.Exit
Enter your Choice: 5
 
 
------------------
(program exited with code: 1)
Press return to continue

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