list_delete

#include <iostream>
#include <fstream>
using namespace std;
struct TList
{
    int value;
    TList* next;
};

bool isEmpty(TList* lst)
{
    return lst==NULL;
}

int addElem(TList** lst, int newValue)
{
    TList * temp = new TList;
    temp->value = newValue;
    temp->next = NULL;
    if(isEmpty((*lst)))
        *lst = temp;
    else
    {
        TList* temp1 = *lst;
        while(temp1->next!=NULL)
            temp1 = temp1->next;
        temp1->next = temp;
    }
    return 0;
}

int printList(TList* lst)
{
    while(lst!=NULL)
    {
        cout<<lst->value<<" ";
        lst = lst->next;
    }
    return 0;
}

int delElem(TList** lst, int delValue)
{
    if(*lst!=NULL)
    {
        TList* temp = *lst;
        while((*lst!=NULL)&&((*lst)->value==delValue))
        {
            temp = (*lst)->next;
            delete *lst;
            (*lst) = temp;
        }
        if(*lst!=NULL)
        {
            temp = *lst;
            TList* temp1 = *lst;
            while(temp!=NULL)
            {
                while((temp!=NULL) && (temp->value!=delValue))
                {
                    temp1 = temp;
                    temp = temp->next;
                }
                if((temp!=NULL)&&(temp->value==delValue))
                {
                    temp1->next = temp->next;
                    delete temp;
                    temp = temp1;
                }
                if(temp!=NULL)
                    temp = temp->next;
            }
        }
        return 0;
    }
    return -1;
}

int main()
{
    TList* List = NULL;
    int t;
    ifstream inputFile("input.txt");
    if(inputFile)
    {
        while(!inputFile.eof())
        {
            inputFile>>t;
            addElem(&List,t);
        }

        printList(List);
        delElem(&List,2);
        cout<<endl;
        printList(List);
        return 0;
    }
    else
        return -1;
}