MPGH Logistic Programming Challenge

int number( int nth )
{
      if( nth<=1 )
      return nth;
      else
            return  number( nth - 1 ) + number( nth - 2 );
}

#include <iostream>

using namespace std;

int main()
{
    int nth=0;
    long long unsigned int first = 0, second =1, total = 0;
    cout<<"nth?"<<endl;
    cin>>nth;
    
    for(int i=1; i<nth; i++)
    {
           total=first + second;
           first=second;
           second = total;
    }
    
    cout<<total;
    system("pause");
    return 0;
}

#include <windows.h>
#include <iostream>
using namespace std;

int WhatTheFuck(int lolwat);

int main()
{
    while(1)
    {
        int gtfo;
        cout<<"Input: ";
        cin>>gtfo;
        cout<<"Output: "<<WhatTheFuck(gtfo)<<endl;
    }
    return 1;
}

int WhatTheFuck(int lolwat)
{
    if(lolwat<2) return 0;
    else return ((lolwat-1)+(lolwat-2));
}

#include <windows.h>
#include <iostream>
using namespace std;

int WhatTheFuck(int lolwat);

int main()
{
    cout<<"That guys sequence goes: ";
    for(int i=0;i<100;i++)
    {
        cout<<WhatTheFuck(i);
        if((i%10)==9) cout<<endl;
        else cout<<", ";
    }
    return 1;
}

int WhatTheFuck(int lolwat)
{
    if(lolwat<2) return 0;
    else return ((lolwat-1)+(lolwat-2));
}