lab3

#include <cstdio>
#include <iostream>
#include <cstring>

using namespace std;

///Working with default constructors and destructors

class Product{
    int code;
    int value;
    int price;
    char* name;
    Product *next;
public:
    //Product();
    //Product(int code, int value, int price,const char* name);
    Product(int ncode, int nvalue, int nprice,const char* nname);
    ~Product();
    void print(){cout<<"\nProduct: "<< code <<"\t"<< value <<"\t"<< price <<"\t"<< name <<" \n";}
    int getCode(){return code;}
    void modCode(int ncode){code=ncode;}
    int getValue(){return value;}
    void modValue(int nvalue){value=nvalue;}
    void addValue(int avalue){value+=avalue;}
    int getPrice(){return price;}
    int &returnPrice(){return price;}
    void modPrice(int nprice){price=nprice;}
    const char*getName(){return name;}
    void modName(const char*nname){
        delete[] name;
        char* c=new char[strlen(nname)+1];
        strcpy(c,nname);
        name=c;
    }
    void modNext(Product*nnext){next=nnext;}
    Product *getNext(){return next;}
/*    int getName(){return name;}
    int getNext(){return next;}*/
};

class ProductList{
private:
    Product *head;
    Product *tmp;
    Product *n;
public:
    ProductList();
    ~ProductList();
    int addProduct(int code, int value, int price,const char* name);
    int removeProduct(int code);
    void print();
    int& modify(int code,const char *name);
};
/////////////////////////////
Product::Product(int ncode, int nvalue, int nprice,const char* nname){
    code = ncode;
    value = nvalue;
    price = nprice;
    char* c=new char[strlen(nname)+1];
    strcpy(c,nname);
    name=c;
    print();
}
Product::~Product(){
    print();
    delete[] name;
}

ProductList::ProductList(){
    head=NULL;
    tmp=NULL;
    n=NULL;
}
ProductList::~ProductList(){
    n=head;
    while(n){
        n = n->getNext();
        //delete[] head->getName();
        delete head;
        head = n;
    }
}
int ProductList::addProduct(int code, int value, int price,const char* name){
    cout<<"Adding: "<<code<<"\t"<<value<<"\t"<<price<<"\t"<<name;

    if (head == NULL || head->getCode() > code){

        n = new Product(code, value, price, name);
//        n = new Product();
//        n->modCode(code);
//        n->modValue(value);
//        n->modPrice(price);
//        n->modName(name);


        n->modNext(head);
        head = n;
    }
    else{
        tmp = head;
        while (tmp->getNext() && tmp->getNext()->getCode() < code){
            tmp = tmp->getNext();
        }
        //cout<<tmp->code<<endl;
        if (tmp->getCode() == code){ //if there is a product of this code

            if((!strcmp(tmp->getName(),name)) && ((tmp->getPrice())==price)){ //if code and name is the same change value

                tmp->addValue(value);
                cout<<endl;
                return 1;
            }
            else{               //if only code is the same update everything

//                tmp->value=value;
//                tmp->price=price;
                //strcpy(tmp->name,name);
                cout<<" Failed\n";
                return 0;
            }
        }
        else{
                n = new Product(code, value, price, name);
//        n = new Product();
//        n->modCode(code);
//        n->modValue(value);
//        n->modPrice(price);
//        n->modName(name);


        n->modNext(tmp->getNext());
        tmp->modNext(n);
        }
    }
    cout<<endl;
}

int ProductList::removeProduct(int code){

    Product* curr;
    Product* del=NULL;
    tmp=head;
    curr=head;
    while(curr!=NULL && curr->getCode()!=code){
        tmp=curr;
        curr=curr->getNext();
    }
    if(curr==NULL){
        cout<<"Product was not in the list\n";
        return 0;
    }
    else{
        del=curr;
        curr=curr->getNext();
        tmp->modNext(curr);
        if(del==head){
            head=head->getNext();
            tmp=NULL;
        }
        cout<<"Product " << del->getCode() << " was deleted\n";

        delete del;
        return 1;
    }


}

void ProductList::print(){

    tmp=head;
    cout<<"---------------------------\n";
    cout<<"Code\t"<<"Value\t"<<"Price\t"<<"Name\t\n";
    while(tmp!=NULL){
        cout<< tmp->getCode() <<"\t"<< tmp->getValue() <<"\t"<< tmp->getPrice() <<"\t"<< tmp->getName() <<" \n";
        tmp=tmp->getNext();
    }
    cout<<"---------------------------\n";
}

int& ProductList::modify(int code,const char *name){
    if (head!=NULL){
        tmp = head;
        if (tmp->getCode()!=code){
            while (tmp->getNext()!=NULL && tmp->getNext()->getCode() == code){
                tmp = tmp->getNext();
            }
        }
        if (tmp->getCode() == code){
            if (!strcmp(tmp->getName(),name)){
                cout<<"Modify("<< code << ", "<<name<<")\n";
                return tmp->returnPrice();
            }
            else{

                //strcpy(tmp->name,name);
                delete[] tmp->getName();
                char* c=new char[strlen(name)+1];
                strcpy(c,name);
                tmp->modName(c);
                //////////////////////////

                cout<<"Modify("<< code << ", "<<name<<")\n";
                return tmp->returnPrice();
            }
        }
    }
    addProduct(code, 0, 0, name);
    tmp = head;
    while (tmp->getNext()!=NULL && tmp->getNext()->getCode() == code){
        tmp = tmp->getNext();
    }
    cout<<"Modify("<< code << ", "<<name<<")\n";
    return tmp->returnPrice();

}
/////////////////////////////
///MAIN//////////////////
int main(){
/*
    ProductList List;
    List.removeProduct(1);
    List.addProduct(1,2,3,"test_name_1");
    List.print();
    List.addProduct(2,2,3,"test_name_2");
    List.addProduct(1,2,3,"test_name_1");
    List.addProduct(1,2,3,"test_name_1");
    List.modify(2,"testtest");
    List.removeProduct(1);
    List.print();
    List.addProduct(1,2,3,"test_name_1");
    List.print();
    //List.~ProductList();
    List.print();
*/
    ProductList ListA;
    ProductList* ListB = new ProductList;

    ListA.addProduct(1,1,1,"product1");
    ListA.removeProduct(1);
    ListA.print();
    ListB->addProduct(2,1,1,"product2");
    ListB->print();
    ListB->removeProduct(2);

    delete ListB;

    return 0;
}