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why loop missing or extra characters

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Craig Johnson
Craig Johnson 2022-10-26
评论： Image Analyst 2022-10-26
Ran in:
w0=ones(4000,1)
A=readmatrix('matrix.txt')
count1=0
count2=0
while
Invalid expression. Check for missing or extra characters.

Error in connector.internal.fevalMatlab

Error in connector.internal.fevalJSON
time1=tic
[lam,i]=powereig(A,w0,1)
fprintf('With the tolerance set to 1, the estimated eigenvalue is:%f',i)
count1=count1+1
fprintf('Iteration count:%d',count1)
break
end
while
time1=tic
[lam,i]=powereig(A,w0,10^-5)
fprintf('With the tolerance set to 1, the estimated eigenvalue is:%f',i)
count2=count2+1
fprintf('Iteration count:%d',count2)
ftime2=toc
fprintf('powereig() Time Elapsed:%d',ftime2)
break
end
Error: File: Lab3_B_505863264.m Line: 5 Column: 6
Invalid expression. Check for missing or extra characters.

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回答（1 个）

Image Analyst
Image Analyst 2022-10-26
编辑：Image Analyst 2022-10-26
You need to have a condition for the while statement that tells it when to continue or quit the loop. You have just a bare while with no condition at all after it!
  2 个评论
Image Analyst
Image Analyst 2022-10-26
If that solves your problem, can you click the "Accept this answer" link 🙂,
or else tell me what is still not working.

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