c program - Ans.fyi 參考答案

c program

wongdaisy

2007-01-22 10:39 am

2) Calculate the value of π from the infinite series.

Print a table that shows the value of π approximated by one tern of this series, by two terms, by three terms, etc. as follow:

pi(1)=2.666667
pi(10)=3.232316
pi(100)=3.151493
pi(1000)=3.142592
pi(10000)=3.141693
pi(100000)=3.141603
pi(1000000)=3.141594
pi(10000000)=3.141593
pi(100000000)=3.141593
pi(1000000000)=3.141593

以上個題點做~~?(use c program)
好緊急,,因為後日考試
唔該~~

回答 (1)

杰倫

2007-01-22 7:49 pm

✔ 最佳答案

以下的algorithm用上以下的infinite series:
pi/4 = 1 - 1/3 + 1/5 - 1/7 + ...

1. accept user input and store to a variable noOfTerms
2. if noOfTerms is greater than zero
2.1 initialize loop_count and pi_over_4 to zero
2.2 for loop_count equals 0 to noOfTerms (inclusively)
2.2.1 if loop_count is even
2.2.1.1 pi_over_4 increments by 1 / (2 * loop_count + 1)
2.2.2 if llop_count is odd
2.2.2.1 pi_over_4 decrements by 1 / (2 * loop_count + 1)
2.3 output pi as pi_over_4 times 4
3. if noOfTerms is smaller than or equals to zero
3.1 print input error message

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