car.cpp

#include<iostream>
#include<fstream>

using namespace std;

struct car{
    int num;
    float price,mileage,distance;
    int year;
    string make,model,color;
    struct car *next;
};

car *head = NULL;
int cnt = 0;

car *newNode(float price,float mileage,float distance,int year,string make,string model,string color,bool n){
    car *c = new car;
    if(n)
        c->num = cnt++;
    else
        c->num = -1;
    c->price = price;
    c->mileage = mileage;
    c->distance = distance;
    c->year = year;
    c->make = make;
    c->model = model;
    c->color = color;
    c->next = NULL;
    return c;
}

void printNode(car *t){
    cout<<"Vehicle #"<<t->num<<"\n";
    cout<<"-------------------\n";
    cout<<"Price:  "<<t->price<<endl;
    cout<<"Year:  "<<t->year<<endl;
    cout<<"Miles:  "<<t->mileage<<endl;
    cout<<"Make:  "<<t->make<<endl;
    cout<<"Model:  "<<t->model<<endl;
    cout<<"Color:  "<<t->color<<endl;
    cout<<"Dist:  "<<t->distance<<endl<<endl;
}

car *findNode(car *t){
    if(head==NULL){
        return NULL;
    }
    cout<<"Finding\n";
    car *c = head;
    while(c!=NULL){
        if(t->price==c->price && t->mileage==c->mileage && t->distance==c->distance && t->year==c->year && t->make.compare(c->make)==0 && t->model.compare(c->model)==0 && t->color.compare(c->color)==0){
            printNode(c);
            return c;
        }
        c = c->next;
    }
    return c;
}


void add(car *h){
    if(head==NULL){
        head = h;
    }else{
        car *t = head;
        while(t->next!=NULL){
            t = t->next;
        }
        t->next = h;
    }
}

void removeNode(car *t){
    car *c = findNode(t);
    car *c1;
    if(c==NULL){
        cout<<"Car Not Found to remove\n\n";
    }else{
        c1 = c;
        c = c->next;
        delete c1;
    }
}

void display(){
    if(head==NULL){
        cout<<"Nothing to display.\n";
        return;
    }
    cout<<"Listing all vehicles:\n";
    cout<<"---------------------------------\n";
    car *t = head;
    while(t!=NULL){
        printNode(t);
        t= t->next;
    }
}

int main(){
    ifstream in;
    in.open("in.txt");
    char ch;
    float price,mileage,distance;
    int year;
    string make,model,color;
    car *temp = NULL;
    while(in>>ch){
        //cout<<ch<<endl;
        if(ch!='L'){
            //cout<<ch<<endl;
            in>>price>>year>>mileage>>make>>model>>color>>distance;
            //cout<<price<<" "<<year<<" "<<mileage<<" "<<make<<" "<<model<<" "<<color<<" "<<distance<<endl;
            switch(ch){
            case 'A':
                temp = newNode(price,mileage,distance,year,make,model,color,true);
                add(temp);
                temp = NULL;
                break;
            case 'R':
                in>>price>>year>>mileage>>make>>model>>color>>distance;
                temp = newNode(price,mileage,distance,year,make,model,color,false);
                //printNode(temp);
                removeNode(temp);
                delete temp;
                temp = NULL;
                break;
            case 'P':
                /*in>>price>>year>>mileage>>make>>model>>color>>distance;
                temp = newNode(price,mileage,distance,year,make,model,color,false);
                car *t;
                t = findNode(temp);
                printNode(t);
                if(t!=NULL){
                    printNode(t);
                }else{
                    delete temp;
                    temp = NULL;
                }*/
                break;
            default: break;
            }
        }else if(ch=='L')
            display();
    }
}