#include<iostream>
using namespace std;
class array
{
int a[30], n;
public:
void input()
{
cout<<"Enter the length: ";
cin>>n;
cout<<"Enter a value for the array "<<endl;
for(int i=0; i<n; i++)
cin>>a[i];
}
void insert_begin()
{
int value;
cout<<"Enter a value for insertion at the front "<<endl;
cin>>value;
n=n+1;
for(int i=n-1; i>=1; i--)
{
a[i]=a[i-1];
}
a[0]=value;
}
void insert_end()
{
int value;
cout<<"Enter a value for insertion at the end "<<endl;
cin>>value;
n=n+1;
a[n-1]=value;
}
void insert_position()
{
int pos;
cout<<"Enter the position "<<endl;
cin>>pos;
int value;
cout<<"Enter the value "<<endl;
cin>>value;
for(int i=n-1; i>=pos; i--)
{
a[i]=a[i-1];
}
a[pos-1]=value;
}
void display()
{
cout<<"The value of array "<<endl;
for(int i=0; i<n; i++)
cout<<a[i]<<" ";
cout<<endl;
}
void delete_begin()
{
int value;
value=a[0];
cout<<"The deleted value is "<<value<<endl;
for(int i=1; i<=n-1; i++)
{
a[i-1]=a[i];
}
n=n-1;
}
void delete_end()
{
int value;
value=a[n-1];
cout<<"The deleted value is "<<value<<endl;
n=n-1;
}
void delete_position()
{
int value, pos;
cout<<"Enter position "<<endl;
cin>>pos;
value=a[pos-1];
cout<<"The deleted value is "<<value<<endl;
for(int i=pos; i<=n-1; i++)
{
a[i-1]=a[i];
}
n=n-1;
}
};
int main()
{
array ob;
ob.input();
while(1)
{
cout<<"Enter 1 for displaying array "<<endl;
cout<<"Enter 2 for inserting element at the front "<<endl;
cout<<"Enter 3 for inserting element at the end "<<endl;
cout<<"Enter 4 for inserting element at the given position "<<endl;
cout<<"Enter 5 for deleting element from the front "<<endl;
cout<<"Enter 6 for deleting element from the end "<<endl;
cout<<"Enter 7 for deleting element from a given position "<<endl;
cout<<"Enter 8 for exit "<<endl;
int choice;
cin>>choice;
switch(choice)
{
case 1:
ob.display();
break;
case 2:
cout<<"\nValue before insertion\n";
ob.display();
ob.insert_begin();
cout<<"\nValue after insertion\n";
ob.display();
break;
case 3:
cout<<"\nValue before insertion\n";
ob.display();
ob.insert_end();
cout<<"\nValue after insertion\n";
ob.display();
break;
case 4:
cout<<"\nValue before insertion\n";
ob.display();
ob.insert_position();
cout<<"\nValue after insertion\n";
ob.display();
break;
case 5:
cout<<"\nValue before deletion\n";
ob.display();
ob.delete_begin();
cout<<"\nValue after deletion\n";
ob.display();
break;
case 6:
cout<<"\nValue before deletion\n";
ob.display();
ob.delete_end();
cout<<"\nValue after deletion\n";
ob.display();
break;
case 7:
cout<<"\nValue before deletion\n";
ob.display();
ob.delete_position();
cout<<"\nValue after deletion\n";
ob.display();
break;
case 8:
cout<<"Exit from program";
break;
default:
cout<<"Enter a valid choice\n";
}
if(choice==8)
break;
}
return 0;
}
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