February 28th, 2013, 05:19 PM

C programming Fibonacci homework help
Hey there, I need help with a homework question. I am not sure how to go about this. So far I have the following code, which prints out the Fibonacci sequence, but I need the following info to be displayed separately. I tried using another while loop with the same condition but it did not work, and I cant see how using a for loop or if statement would make sense.
Starting with the second number of the sequence, display the division of the number by the
previous one for the complete sequence (4 decimals precision). Can you see a pattern developing?
We call this the Golden Number.
So far I have:where value is the number that is the number I am looking to use for the question I posted above.
#include <stdio.h>
int main()
{
int firstnumber=1, secondnumber=0, value=1, num=1000000, set=0;
printf("The Fibonacci Series for values up to 1,000,000 is:\n");
while(value <= num)
{
firstnumber = secondnumber;
secondnumber = value;
value = firstnumber + secondnumber;
set=set+1;
}
printf("\nThere are %d values within the fibonacci sequence between 1 and 1,000,000.\n\n", set);
return 0;
}
March 1st, 2013, 03:07 PM

I don't understand all your requirements but what's the problem? Maybe you're supposed to store the Fibonacci numbers in an array or something. Otherwise, just stick in the division and you're "golden". Remember to divide using floating point numbers instead of integers.
Code:
#include <stdio.h>
int main() {
int firstnumber=1, secondnumber=0, value=1, num=1000000, set=0;
puts("The Fibonacci Series for values up to 1,000,000 is:\n");
while(value <= num) {
if (firstnumber)
printf("%6d / %6d = %10.8lf\n",secondnumber,firstnumber,((double)secondnumber)/((double)firstnumber));
firstnumber = secondnumber;
secondnumber = value;
value = firstnumber + secondnumber;
++set;
}
printf("\nThere are %d values within the fibonacci sequence between 1 and %d.\n\n", set,num);
return 0;
}
#if 0
1
phi = 1 + 
1
1 + 
1 + ...
phi = 1 + 1/phi
phi**2  phi  1 = 0
#endif
[code]
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