Finding Fibonacci With Mathematical Formula in C

Budy K. Ir

Jun. 13, 14 · Code Snippet

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Finding Fibonacci sequence can be done by a simple logic, but here's a math formula. it can solve the case too.

The formula : Fn = (x1^n – x2^n) / root(5) dengan pembulatan kebawah

where X1 and X2 are the roots of x^2 - x - 1=0 equation

to find X1 and X2 , we can use the following formula

So that X1,X2 =>

int fibonaci(int n){
    
    int i;float tmp;
    
    //x^2 - x - 1 =0
    float x1 = ( 1 + sqrt(5) ) / 2;
    float x2 = (1 - sqrt(5) ) / 2;  
    
    for(i=0;i

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Finding Fibonacci With Mathematical Formula in C

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