Fibonacci Program

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Fibonacci Program

Post by Admin on Wed Dec 02, 2009 12:43 am

It does what the description says


Code:
#include <iostream>
using namespace std;

int main(){

int x,y,z;

x=0;
y=1;
cout<<"The Fibonacci Sequence....\n\n";
int i;
cout<<x<<", ";
cout<<y<<", ";

for(i=0;i<30;i++)
{
z=x+y;
cout<<z<<", ";
x=y;
y=z;
}

system("pause");
return 0;
}

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Admin
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Really Allen?

Post by Paul on Wed Dec 02, 2009 12:51 am

Fibonacci Method 1:
Code:

#include <iostream>
#include <iomanip>
using namespace std;

int main()
{
   system("cls");
   unsigned int numofnums;
   cout << "how many numbers of the "
       << "fibonacci sequence would"
       << "you like to print: ";
   cin >> numofnums;
   cout.setf(ios_base::fixed, ios_base::floatfield);
   double x, y, z;
   x = 0;
   y = 1;
   if(numofnums <= 0)
   {
      return 0;
   }
   if(numofnums == 1)
   {
      cout << setprecision(0) << endl << x << endl;
      return 0;
   }
   if((numofnums - 2) >= 0)
   {
      numofnums -= 2;
   }
   cout << setprecision(0) << x << endl << y << endl;
   for(int i = 0; i < numofnums; i++)
   {
      z = x + y;
      x = y;
      y = z;
      cout << setprecision(0) << z << endl;
   }
   return 0;
}

and

Fibonacci Method 2:
Code:

#include <iostream>
#include <iomanip>
using namespace std;

int main()
{
   system("cls");
   unsigned long numofnums;
   cout << "how many numbers of the "
       << "fibonacci sequence would"
       << "you like to print: ";
   cin >> numofnums;
   cout.setf(ios_base::fixed, ios_base::floatfield);
   if(numofnums <= 0)
   {
      return 0;
   }
   if(numofnums == 1)
   {
      cout << endl << 0 << endl;
      return 0;
   }
   for(unsigned long i = 0; i < numofnums; i++)
   {
      cout << setprecision(0) << fibonacci(i) << endl;
   }
   return 0;
}
double fibonacci(unsigned long num)
{
   if(num>=2)return fibonacci(num-1)+fibonacci(num-2); //example of recursion, a function that calls itself
   else if(num>0) return 1;
   else return 0;
}


Razz
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Re: Fibonacci Program

Post by Admin on Wed Dec 02, 2009 12:52 am

oooh so you're paul! lol i thought you were Brad.


now i recognize the "you fail"!
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Re: Fibonacci Program

Post by Paul on Wed Dec 02, 2009 6:20 am


One huge difference between my code and yours is that minw will print out truly gigantic numbers.
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Re: Fibonacci Program

Post by Unchained on Wed Dec 02, 2009 8:46 am

Why did you use cout 3 times instead of using /n ?
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Re: Fibonacci Program

Post by Paul on Thu Dec 03, 2009 2:59 am

In my code?
The new line and the separate << makes no difference at all it prints all on one line.
In fact I don't even need the individual << for each line and it would still print on one line.
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Re: Fibonacci Program

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