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

}




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