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| #include<iostream.h>
#include<conio.h>
int count=0;
int list[10];
int size,i; //veribles
int op,ch,dele;
int flag=1;
class lists
{
public:
void input()
{
cout<<"ENTER ARRAYS SIZE\n"; //reading array size from user
cin>>size;
}
void insert()
{
clrscr();
if(count<size) //element can inserted only if count is
{ less than array size.
count++; //increment count by 1 when next to create
cout<<"ENTER ELEMENT\n"; memory for next element.
cin>>list[count]; //reading array element from user.
}
else //if count become equal to the array size
{ which means List is full.
cout<<"LIST IS FULL\n";
}
}
void del() //Function to delete.
{
if(count<=0)
{ //List is empty if count is less than
cout<<"THE LIST IS EMPTY\n"; or equal to 0.
}
else //choice to delete element.
{
cout<<"1:TO DELETE FROM TOP\n";
cout<<"2:TO DELETE FROM BOTTUM\n";
cout<<"3:TO DELETE USING ADDRESS\n";
cin>>ch;
switch(ch)
{
case 1 : //if choice is selected 1 its easly delete by
count--; decrement count by 1 to delete element from top.
break;
case 2 :
for(i=1;i<=count;i++) //if choice is 2 selected to delete element from bottom
{
list[i]=list[i+1]; //update current element of aarray to next element and
}
count--; //decrement count by 1.
break;
case 3 : //if choice selected 3 to delete by entering address of
for(i=1;i<=count;i++) the element.
{
cout<<"\n"<<i<<" "<<list[i]; //programm to display address and its elements.
}
cout<<"\nENTER ADDRESS TO DELETE\n"; //recieve address from user to delete.
cin>>dele;
list[dele]=NULL; //make that addressed memory location to NULL.
for(i=dele;i<=count;i++) //update current values of array to next value of array
{ from specified address "dele"
list[i]=list[i+1];
}
count--; //decrement count by 1.
break;
}
}
}
void display() //function to display elements of list.
{
if(count==0) //List is empty if count is equal to 0.
{
cout<<"THE LIST IS EMPTY\n";
}
else //else display element.
{
cout<<"ELEMENTS IN THE LIST\n";
for(i=1;i<=count;i++)
{
cout<<list[i]<<",";
}
}
}
};
void main()
{
lists s;
if(flag==1)
{
clrscr();
s.input();
flag=0;
}
cout<<"\n1:TO INSERT ITEM\n";
cout<<"2:TO DELETE ITEM\n";
cout<<"3:TO DISPLAY ITEM\n";
cin>>op;
switch(op)
{
case 1 : s.insert(); main();
break;
case 2 : s.del(); main();
break;
case 3 : s.display(); main();
break;
}
}
|
