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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{
* * * * *         *** ** ** * **
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*** * * * * * * * * * *** * ** * ** * * ** ***** n_2=n_1;
* ** ** * * * * ** ** * ** * *** * ** ** n_1=fib;
* * ** * * * ** * *** * ** * ** * }
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* *** * * } ** **** ** ****** **
* ***** *** * ** * ** * ** * ** * ** *** *
* ** * * * }
* ***** **** return 0;

}




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*
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