# How can I fix this infinite loop?

5 ビュー (過去 30 日間)
Gavin Thompson 2021 年 10 月 8 日
コメント済み: Gavin Thompson 2021 年 10 月 8 日
C = input('Enter a vector of coefficients for an odd-order polynomial: ');
valC = length(C);
count = 1;
while mod(valC,2) == 1
C = input('Try Again. Enter a vector of coefficients for an odd-order polynomial: ');
count = count + 1;
if count > 4
warning('Odd number of coefficients entered. Last element of user input removed.');
C(:,end) = [];
end
end
When the count variable reaches 5 I just want to produce the warning and remove the last number from the C array but when I run it, MATLAB produces the warning and removes the variable however it just starts the loop over again instead of ending after the last number in C array is removed.

サインインしてコメントする。

### 採用された回答

Walter Roberson 2021 年 10 月 8 日
C = input('Enter a vector of coefficients for an odd-order polynomial: ');
count = 1;
while mod(numel(C),2) == 1
C = input('Try Again. Enter a vector of coefficients for an odd-order polynomial: ');
count = count + 1;
if count > 4
warning('Odd number of coefficients entered. Last element of user input removed.');
C(end) = [];
break;
end
end
Question: what do you want to do if the user enters the empty array -- such as if they just press return.
##### 1 件のコメント表示非表示 なし
Gavin Thompson 2021 年 10 月 8 日
Good question, I don't think it'll be necessary to code that in right now but I think I know of a few ways I could code that possibility into my program if needed. Thank you for your insight!

サインインしてコメントする。

### Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by