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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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