Question

Problema din imagine, rezolvarea in c++.

Answer 1

#include <iostream>
using namespace std;

int main()
{
    int n, a = 1, b = 2, c;
    cin>>n;
    while(b < n)
        {
            c = a + b;
            a = b;
            b = c;
        }
    if(b - n < n - a)
        cout<<b;
    else
        cout<<a;
}