#include <windows.h>
#include <conio.h>
#include <string>
#include <iostream>
#include <fstream>

using namespace std;

float* number;
int size;

STARTUPINFO si1,si2;
PROCESS_INFORMATION pi1,pi2;

void load()
{
    fstream file;
    file.open("wejscie.txt",ios::in);

    size=0;
    file>>size;

    number = new float[size];

    int i=0;
    char buf[1];
    while(!file.eof())
    {
        file>>number[i];
        i++;
    }

    file.close();

}

void save(char what, float result)
{
    fstream file;

    if(what==1)
    {
        file.open("1.txt",ios::out);
    }
    else
    {
        file.open("2.txt",ios::out);
    }
    file<<result;

    file.close();
}

float operation(char what)
{
    float result=0;

    if(what=='+')
    {
        for(int i=0;i<size;i++)
            result +=number[i];
    }
    else
    {
        for(int i=0;i<size;i++)
            result -=number[i];
    }

    return result;
}

void compare()
{
    fstream file1;
    fstream file2;

    file1.open("1.txt",ios::in);
    file2.open("2.txt",ios::in);

    float result1=0;
    float result2=0;

    file1>>result1;
    file2>>result2;

    file1.close();
    file2.close();
    //------
    cout<<"\n--------------------------------------------";
    cout<<"\n              R E S U L T S:";
    cout<<"\n--------------------------------------------";
    cout<<"\n     dadawanie:   "<<result1<<endl;
    cout<<"\n     odejmowanie: "<<result2<<endl;
    cout<<"\n--------------------------------------------";
}

int main(int argc, const char* argv[])
{


    if(argc==1)//proces glowny
    {
        cout<<"Uruchomiono proces glowny"<<endl;

        memset(&si1,0,sizeof(si1));
        memset(&si2,0,sizeof(si2));
        si1.cb = sizeof(si1);
        si2.cb = sizeof(si2);
        TCHAR path1[MAX_PATH] = TEXT("LAB3_MechanizmWspoldzielenia.exe 1");
        TCHAR path2[MAX_PATH] = TEXT("LAB3_MechanizmWspoldzielenia.exe 2");

        CreateProcess(NULL,path1,NULL,NULL,false,0,NULL,NULL,&si1,&pi1);
        CreateProcess(NULL,path2,NULL,NULL,false,0,NULL,NULL,&si2,&pi2);
        WaitForSingleObject(pi1.hProcess,INFINITE);
        WaitForSingleObject(pi2.hProcess,INFINITE);
        compare();
        CloseHandle(pi1.hProcess);
        CloseHandle(pi2.hProcess);
        getch();
    }
    else if(argc==2)//procesy poboczny
    {
        if(atoi(argv[1])==1) //dodawanie
        {
            cout<<"Uruchomiono proces poboczny - dodawanie"<<endl;
            load();
            float result = operation('+');
            save(1,result);
        }
        else //odejmowanie
        {
            cout<<"Uruchomiono proces poboczny - odejmowanie"<<endl;
            load();
            float result = operation('-');
            save(2,result);
        }
    }
    else
        cout<<"Blad programu";

    delete number;

    return 0;
}