c语言Fibonacci数列

#include<stdio.h>

 

int main(void){

     int n=0;

     int tmp=0;

     int f1=1;

     int f2=1;

    

     printf("Please input n:");

     scanf("%d",&n);

    

     while(f2<n){

      //f1为上一个fibonacci数,f2为本次得到的fibonacci数

             tmp=f2;

             f2=f1+f2;

             f1=tmp;

     }

     printf("The maximal fibonacci number less than %d is %d./n",n,f1);

     return 0;

}