Vector in C++ - Sanfoundry

This C++ Program demonstrates the implementation of Vector.

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

```
/*
```
```
 * C++ Program to Implement Vector
```
```
 */
```
```
#include <iostream>
```
```
#include <vector>
```
```
#include <string>
```
```
#include <cstdlib>
```
```
using namespace std;
```
```
int main()
```
```
{
```
```
    vector<int> ss;
```
```
    vector<int>::iterator it;
```
```
    int choice, item;
```
```
    while (1)
```
```
    {
```

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

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

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

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

        cout<<"2.Delete Last Element of the Vector"<<endl;

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

        cout<<"4.Display by Index"<<endl;

        cout<<"5.Dislplay by Iterator"<<endl;

        cout<<"6.Clear the Vector"<<endl;

```
        cout<<"7.Exit"<<endl;
```
```
        cout<<"Enter your Choice: ";
```
```
        cin>>choice;
```
```
        switch(choice)
```
```
        {
```
```
        case 1:
```

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

```
            cin>>item;
```
```
            ss.push_back(item);
```
```
            break;
```
```
        case 2:
```

            cout<<"Deleted Last Element Inserted"<<endl;

```
            ss.pop_back();
```
```
            break;
```
```
        case 3:
```
```
	    cout<<"Size of Vector: ";
```
```
	    cout<<ss.size()<<endl;
```
```
            break;
```
```
        case 4:
```

            cout<<"Displaying Vector by Index: ";

	    for (int i = 0; i < ss.size(); i++)

```
	    {
```
```
                cout<<ss[i]<<" ";
```
```
	    }
```
```
	    cout<<endl;
```
```
            break;
```
```
        case 5:
```

	    cout<<"Displaying Vector by Iterator: ";

	    for (it = ss.begin(); it != ss.end(); it++)

```
	    {
```
```
                cout<<*it<<" ";
```
```
	    }
```
```
	    cout<<endl;
```
```
            break;
```
```
        case 6:
```
```
            ss.clear();
```

            cout<<"Vector Cleared"<<endl;

```
            break;
```
```
	case 7:
```
```
            exit(1);
```
```
            break;
```
```
        default:
```
```
            cout<<"Wrong Choice"<<endl;
```
```
        }
```
```
    }
```
```
    return 0;
```
```
}
```

$ g++ vector.cpp
$ a.out
 
 
---------------------
Vector Implementation in Stl
 
---------------------
1.Insert Element into the Vector
2.Delete Last Element of the Vector
3.Size of the Vector
4.Display by Index
5.Dislplay by Iterator
6.Clear the Vector
7.Exit
Enter your Choice: 1
Enter value to be inserted: 4
 
---------------------
Vector Implementation in Stl
 
---------------------
1.Insert Element into the Vector
2.Delete Last Element of the Vector
3.Size of the Vector
4.Display by Index
5.Dislplay by Iterator
6.Clear the Vector
7.Exit
Enter your Choice: 1
Enter value to be inserted: 5
 
---------------------
Vector Implementation in Stl
 
---------------------
1.Insert Element into the Vector
2.Delete Last Element of the Vector
3.Size of the Vector
4.Display by Index
5.Dislplay by Iterator
6.Clear the Vector
7.Exit
Enter your Choice: 1
Enter value to be inserted: 3
 
---------------------
Vector Implementation in Stl
 
---------------------
1.Insert Element into the Vector
2.Delete Last Element of the Vector
3.Size of the Vector
4.Display by Index
5.Dislplay by Iterator
6.Clear the Vector
7.Exit
Enter your Choice: 1
Enter value to be inserted: 2
 
---------------------
Vector Implementation in Stl
 
---------------------
1.Insert Element into the Vector
2.Delete Last Element of the Vector
3.Size of the Vector
4.Display by Index
5.Dislplay by Iterator
6.Clear the Vector
7.Exit
Enter your Choice: 1
Enter value to be inserted: 1
 
---------------------
Vector Implementation in Stl
 
---------------------
1.Insert Element into the Vector
2.Delete Last Element of the Vector
3.Size of the Vector
4.Display by Index
5.Dislplay by Iterator
6.Clear the Vector
7.Exit
Enter your Choice: 3
Size of Vector: 5
 
---------------------
Vector Implementation in Stl
 
---------------------
1.Insert Element into the Vector
2.Delete Last Element of the Vector
3.Size of the Vector
4.Display by Index
5.Dislplay by Iterator
6.Clear the Vector
7.Exit
Enter your Choice: 4
Displaying Vector by Index: 4 5 3 2 1
 
---------------------
Vector Implementation in Stl
 
---------------------
1.Insert Element into the Vector
2.Delete Last Element of the Vector
3.Size of the Vector
4.Display by Index
5.Dislplay by Iterator
6.Clear the Vector
7.Exit
Enter your Choice: 5
Displaying Vector by Iterator: 4 5 3 2 1
 
---------------------
Vector Implementation in Stl
 
---------------------
1.Insert Element into the Vector
2.Delete Last Element of the Vector
3.Size of the Vector
4.Display by Index
5.Dislplay by Iterator
6.Clear the Vector
7.Exit
Enter your Choice: 2
Deleted Last Element Inserted
 
---------------------
Vector Implementation in Stl
 
---------------------
1.Insert Element into the Vector
2.Delete Last Element of the Vector
3.Size of the Vector
4.Display by Index
5.Dislplay by Iterator
6.Clear the Vector
7.Exit
Enter your Choice: 3
Size of Vector: 4
 
---------------------
Vector Implementation in Stl
 
---------------------
1.Insert Element into the Vector
2.Delete Last Element of the Vector
3.Size of the Vector
4.Display by Index
5.Dislplay by Iterator
6.Clear the Vector
7.Exit
Enter your Choice: 4
Displaying Vector by Index: 4 5 3 2
 
---------------------
Vector Implementation in Stl
 
---------------------
1.Insert Element into the Vector
2.Delete Last Element of the Vector
3.Size of the Vector
4.Display by Index
5.Dislplay by Iterator
6.Clear the Vector
7.Exit
Enter your Choice: 6
Vector Cleared
 
---------------------
Vector Implementation in Stl
 
---------------------
1.Insert Element into the Vector
2.Delete Last Element of the Vector
3.Size of the Vector
4.Display by Index
5.Dislplay by Iterator
6.Clear the Vector
7.Exit
Enter your Choice: 3
Size of Vector: 0
 
---------------------
Vector Implementation in Stl
 
---------------------
1.Insert Element into the Vector
2.Delete Last Element of the Vector
3.Size of the Vector
4.Display by Index
5.Dislplay by Iterator
6.Clear the Vector
7.Exit
Enter your Choice: 7
 
------------------
(program exited with code: 1)
Press return to continue

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