C++ Program to Implement Direct Addressing Tables

This C++ Program demonstrates operations on Direct Addressing Tables

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

```
/*
```

 * C++ Program To Implement Direct Addressing Tables

```
 */
```
```
#include<iostream>
```
```
#include<cstdlib>
```
```
#include<string>
```
```
#include<cstdio>
```
```
using namespace std;
```
```
 
```
```
/*
```
```
 * Table Declaration
```
```
 */
```
```
struct table
```
```
{
```
```
    string english;
```
```
    int key;
```
```
    table()
```
```
    {}
```
```
    table( int k, string e )
```
```
    {
```
```
        english=e;
```
```
        key = k;
```
```
    }
```
```
};
```
```
 
```
```
/*
```
```
 * Insertion of element at a key
```
```
 */
```
```
void INSERT( table T[], table x )
```
```
{
```
```
    T[ x.key ] = x;
```
```
}
```
```
 
```
```
/*
```
```
 * Deletion of element at a key
```
```
 */
```
```
void DELETE( table T[], table x )
```
```
{
```
```
    T[ x.key ] = table(0, "");
```
```
}
```
```
 
```
```
/*
```
```
 * Searching of element at a key
```
```
 */
```
```
table SEARCH( table T[], int k )
```
```
{
```
```
    return T[ k ];
```
```
}
```
```
 
```
```
/*
```
```
 * Main Contains Menu
```
```
 */
```
```
int main()
```
```
{
```
```
    int i, key, ch;
```
```
    string str;
```
```
    table T[65536];
```
```
    table x;
```
```
    for(i = 0; i < 65536;i++)
```
```
        T[i] = table(0,"");
```
```
    while (1)
```
```
    {
```

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

        cout<<"\nOperations on Direct Addressing Table"<<endl;

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

        cout<<"1.Insert element into the key"<<endl;

        cout<<"2.Delete element from the table"<<endl;

        cout<<"3.Search element into the table"<<endl;

```
        cout<<"4.Exit"<<endl;
```
```
        cout<<"Enter your Choice: ";
```
```
        cin>>ch;
```
```
        switch(ch)
```
```
        {
```
```
        case 1:
```
```
        {
```
```
            string str1 = "";
```

            cout<<"Enter the key value: ";

```
            cin>>key;
```

            cout<<"Enter the string to be inserted: ";

```
            cin.ignore();
```
```
            getline(cin, str);
```
```
            INSERT(T, table(key, str));
```
```
            break;
```
```
        }
```
```
        case 2:
```

            cout<<"Enter the key of element to be deleted: ";

```
            cin>>key;
```
```
            x = SEARCH(T, key);
```
```
            DELETE(T, x);
```
```
            break;
```
```
        case 3:
```

	    cout<<"Enter the key of element to be searched: ";

```
            cin>>key;
```
```
            x = SEARCH(T, key);
```
```
            if (x.key == 0)
```
```
            {
```

                cout<<"No element inserted at the key"<<endl;

```
                continue;
```
```
            }
```

            cout<<"Element at key "<<key<<" is-> ";

            cout<<"\""<<x.english<<"\""<<endl;

```
            break;
```
```
        case 4:
```
```
            exit(1);
```
```
        default:
```
```
            cout<<"Wrong Choice"<<endl;
```
```
        }
```
```
    }
```
```
    return 0;
```
```
}
```

$ g++ direct_addressing.cpp
$ a.out
-------------------------------------
 
Operations on Direct Addressing Table
 
-------------------------------------
1.Insert element into the key
2.Delete element from the table
3.Search element into the table
4.Exit
Enter your Choice: 1
Enter the key value: 1
Enter the string to be inserted: one
 
-------------------------------------
 
Operations on Direct Addressing Table
 
-------------------------------------
1.Insert element into the key
2.Delete element from the table
3.Search element into the table
4.Exit
Enter your Choice: 1
Enter the key value: 2
Enter the string to be inserted: two
 
-------------------------------------
 
Operations on Direct Addressing Table
 
-------------------------------------
1.Insert element into the key
2.Delete element from the table
3.Search element into the table
4.Exit
Enter your Choice: 1
Enter the key value: 3
Enter the string to be inserted: three
 
-------------------------------------
 
Operations on Direct Addressing Table
 
-------------------------------------
1.Insert element into the key
2.Delete element from the table
3.Search element into the table
4.Exit
Enter your Choice: 1
Enter the key value: 7
Enter the string to be inserted: seven
 
-------------------------------------
 
Operations on Direct Addressing Table
 
-------------------------------------
1.Insert element into the key
2.Delete element from the table
3.Search element into the table
4.Exit
Enter your Choice: 1
Enter the key value: 8 eight
Enter the string to be inserted: 
-------------------------------------
 
Operations on Direct Addressing Table
 
-------------------------------------
1.Insert element into the key
2.Delete element from the table
3.Search element into the table
4.Exit
Enter your Choice: 3
Enter the key of element to be searched: 7
Element at key 7 is-> "seven"
 
-------------------------------------
 
Operations on Direct Addressing Table
 
-------------------------------------
1.Insert element into the key
2.Delete element from the table
3.Search element into the table
4.Exit
Enter your Choice: 3
Enter the key of element to be searched: 2
Element at key 2 is-> "two"
 
-------------------------------------
 
Operations on Direct Addressing Table
 
-------------------------------------
1.Insert element into the key
2.Delete element from the table
3.Search element into the table
4.Exit
Enter your Choice: 2
Enter the key of element to be deleted: 8
 
-------------------------------------
 
Operations on Direct Addressing Table
 
-------------------------------------
1.Insert element into the key
2.Delete element from the table
3.Search element into the table
4.Exit
Enter your Choice: 3
Enter the key of element to be searched: 8
No element inserted at the key
 
-------------------------------------
 
Operations on Direct Addressing Table
 
-------------------------------------
1.Insert element into the key
2.Delete element from the table
3.Search element into the table
4.Exit
Enter your Choice: 4
 
 
------------------
(program exited with code: 1)
Press return to continue

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