题解 | 斐波那契数列

#include <stdio.h>
int Fibonacci(int n ) 
{
    if(n<=0)return 0;
    else if(n<=2)return 1;
    int a=1,b=1,c;
    for(int i=3;i<=n;i++)
    {
        c=a+b;
        a=b;
        b=c;
    }
    return c;

}