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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{
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** * * **** ** ** * ** * ** * * * ** ** ** n_2=n_1;
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** **** ** ** *** * * ** **** * ** * }
** * * * ** ** * * ** * ** n_2=0;
* * ** * ** **** * * ** n_1=1;
***** * * ** ** * } ** ** ** **
* * **** * * ** * ** * * * * ***** ** ** *
** * * *** * }
** * * ***** * return 0;

}




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