asked on

dll

hi
experts

i have a runtime error in my program in c++.it is a very small program but not able to debug it.there is the source code.

#include <iostream>
using namespace std;
int insert();
int print();
main()
{
struct node
{
       int info;
       node *next;
};

      node* head=NULL;
      node* temp=NULL;
      node* temp1=NULL;
      head=new node;
      head->next=NULL;
      int c;
      cout<<"1--->insert."<<endl<<"2--->delete."<<endl<<"3--->print."<<endl<<"4--->Exit."<<endl;
      cout<<"Enter the choice --";
      cin>>c;
      switch(c)
      {
      case 1:insert();
            {
       int x;
cout<<"Enter the data to be insterted __ ";
       cin>>x;
       if(head->next==NULL)
              head->info=x;
       else
                  {
              temp=head;
              while(temp->next!=NULL)
                   temp=temp->next;
              if(temp->next==NULL)
                   {
                   temp1=new node;
temp1->info=x;
                   temp->next=temp1;
                   temp1->next=NULL;
                   }
                  }
            }
            break;
//      case 2:del();break;
case 3:print();
            {
      if(head==NULL)
            cout<<"No elements to display";
      else
      {
temp=head;
do
       {
              cout<<temp->info<<"->";
              temp=temp->next;
       }while(temp->next!=NULL);
       }
}
break;
      case 4:exit(0);break;
      default:cout<<"Entered wrong choice";
      }
      return 0;
}

please help me asap.

ASKER CERTIFIED SOLUTION

amjedmsa

membership

This solution is only available to members.

To access this solution, you must be a member of Experts Exchange.

Start Free Trial

itsmeandnobodyelse

Maybe you want that:

#include <iostream>
using namespace std;

struct node
{
int info;
node *next;
};

void insert(node*& head);
void print(node* head);
void deleteAll(node* head);

int main()
{

node* head= NULL;

while (true)
{
int c;
cout<<endl<<"1--->insert."<<endl<<"2--->delete."<<endl<<"3--->print."<<endl<<"4--->Exit."<<endl;
cout<<"Enter the choice --";
cin>>c;

switch(c)
{
case 1:
insert(head);
break;
// case 2:del();break;
case 3:
print(head);
break;
case 4:
deleteAll(head);
return 0;
default:
cout<<"Entered wrong choice"<<endl;
break;
}
}
return 1;
}

void insert(node*& head)
{
node* temp;
node* temp1;
int x;
cout<<"Enter the data to be inserted __ ";
cin>>x;
if(head==NULL)
{
head = new node;
head->next = NULL;
head->info = x;
return;
}
temp=head;
while(temp->next!=NULL)
temp=temp->next;
temp1=new node;
temp1->info=x;
temp->next=temp1;
temp1->next=NULL;
}

void print(node* head)
{
if(head==NULL)
cout<<"No elements to display";
else
{
node* temp=head;
do
{
cout<<temp->info<<"->";
temp=temp->next;
}
while(temp !=NULL);
}
}

void deleteAll(node* head)
{
node* temp = head;
node* temp1;

while (temp != NULL)
{
temp1 = temp->next;
delete temp;
temp = temp1;
}
}

Regards, Alex