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費式數列中,除了第一項第二項是一之外,之後的每一項皆為前兩項的和,請撰寫一程式,由使用者輸入N代表費是數列的第N項,程式會輸出第N項的值。

 

輸入說明:

輸入一個正整數N,代表要計算出費式數列的的N項,N大於0。

 

輸出說明:

輸出費式數列第N項的值。

 

輸入範例:

5

 

輸出範例:

5
[Exam] asked in 2017-1 程式設計(一)AD by (30k points)
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int ** * *

{
*   int * ** *
**** * * ** while(1){
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*** * * * ** * ** ** if(n==0)
*** *** ** ** * * * * ** * * * **
** *** * * ** * * else if(n==1)
*** ** **** ** *** * * ** ** ** ***** = n_1;
* * ** *       else{
** * ** * **         **** ****** **
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* * * * * * * ** * * ** * * * ** * * **** n_2=n_1;
** **** *** * ** * *** *** * *** * ** ** *** n_1=fib;
* *** ** ***** * ***** * *** **** * ** }
* *** *** * * * ** * ** ** ** ** ** n_2=0;
* * * * * * * * *** ** * * n_1=1;
** *** ** * ** ** ** * } *** *** * * * *
** ** ** * * * * ** * * *** *** ** ***
* * }
*** * * * * * return 0;

}




*** ** * *** ** **
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