#include <iostream>
#include <cmath>
#include <stdlib.h>
 
 
using namespace std;
 
void Sobiranje()
{
    float v_broj,rezultat=0;
 
    system("cls");
 
    cout<<endl;
    cout<<" ---------------------------------"<<endl;
    cout<<" ***** Marijan's Claculator *****"<<endl;
    cout<<" ---------------------------------"<<endl;
    cout<<endl;
    cout<<endl;
    cout<<endl;
 
    float broj,a,broj_nasob;
    cout<<"Insert the numbers you would like me to calculate,to return to the main menu press 0 :"<<endl;
 
    while(broj!=0)
        {
            cin>>v_broj;
            if(v_broj!=0) //If the number you insert is not 0
                rezultat=rezultat+v_broj;//keep adding them all
            else     //if it is 0
                return; //Get back to the main function to start it all over
 
 
 
            cout<<"Rezultatot e :"<<rezultat<<endl;
        }
}
 
 
int main()
{ 
    int Izbor=0;
    while ( true ) {
        cout<<endl;
        cout<<" ---------------------------------"<<endl;
        cout<<" ***** Marijan's Calculator *****"<<endl;
        cout<<" ---------------------------------"<<endl;
 
        cout<<endl;
        cout<<endl;
        cout<<" *-------------------------------------------------*"<<endl;
        cout<<" |1.For addiction of two or more numbers select 1|"<<endl;
        cout<<" |2.For subtraction select 2| "<<endl;
        cout<<" |3.For multipication select 3|"<<endl;
        cout<<" |1.For division select 4|"<<endl;
        cout<<" *-------------------------------------------------* "<<endl;
        cout<<"Izbor :"<<endl;//Means "choice"
 
        cin>>Izbor;//enter your choice
        if(Izbor==1)//if you choose 1
            Sobiranje();//run the Sobiranje function(addition)
 
    }
 
    system("PAUSE");
    return 0;
 
 
}