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

}




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