fibonacci number from main(). For this problem, the 3th Fibonacci number is 1, t

Question

      fibonacci number from main(). For this problem, the 3th

     Fibonacci number is 1, the 4th is 2, the 5th is 3, etc.

      (The series is: 0, 1, 1, 2, 3, 5 etc)

   b) Pass the input value to the function fibonacci(n) that

      returns the value. Display the value to the console.

   c) Have your program calculate the value of the largest fibonacci

      number. Do not hard-code this into your program. The purpose is

      to be able to take your code to another system and discover the

      value without changing your code. If you are unable to do this

      just print a statement you do not have a solution for this part

      of the assignment.

      Example: Which fibonacci number do you want? 5

                The 5th fibonacci number is: 3

                The largest fibonacci number that can be calculated on

                this system is: (number here)

Explanation / Answer

please rate - thanks #include<conio.h>
#include<stdio.h>
#include<limits.h>
int fibonacci(int);
int main()
{int n;
int fibnum;
printf("Which fibonacci number do you want?");
scanf("%d",&n);
fibnum=fibonacci(n);
printf("The %dth fibonacci number is: %d ",n,fibnum);
fibnum=fibonacci(50000);            //generate a large number of fibonacci numbers
printf("The largest fibonacci number that can be calculated on ");
printf("this system is %d",fibnum);
getch();
return 0;
}
int fibonacci(int n)
{int first=0,second=1,next=0;
int i;
for(i=0;i<n-2; i++)
   {   
    next=first+second;
    if(next>INT_MAX||next<0)                 //too big?
       return second;
    first=second;
    second=next;
   }
return next;
}

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