hdu2070Fibbonacci Number

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Fibbonacci Number

Time Limit: 1000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)
Total Submission(s): 13830 Accepted Submission(s): 6898

Problem Description

Your objective for this question is to develop a program which will generate a fibbonacci number. The fibbonacci function is defined as such:

f(0) = 0
f(1) = 1
f(n) = f(n-1) + f(n-2)

Your program should be able to handle values of n in the range 0 to 50.

Input

Each test case consists of one integer n in a single line where 0≤n≤50. The input is terminated by -1.

Output

Print out the answer in a single line for each test case.

Sample Input

345-1

Sample Output

235Hint
Note:
 you can use 64bit integer: __int64
代码：
#include<stdio.h>int main(){int n,i;__int64 a[10000];while(scanf("%d",&n)!=EOF){if(n==-1)break;a[0]=0;a[1]=1;for(i=2;i<=n;i++)a[i]=a[i-1]+a[i-2];printf("%I64d\n",a[n]);}return 0;}
//又是斐波那契数列！！

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