Problem 564. How to subtract?

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{"relationships":[{"relationshipType":"http://schemas.mathworks.com/matlab/code/2013/relationships/document","targetMode":"","relationshipId":"rId1","target":"/matlab/document.xml"},{"relationshipType":"http://schemas.mathworks.com/matlab/code/2013/relationships/output","targetMode":"","relationshipId":"rId2","target":"/matlab/output.xml"}],"parts":[{"partUri":"/matlab/document.xml","relationship":[],"contentType":"application/vnd.mathworks.matlab.code.document+xml","content":"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<w:document xmlns:w=\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\"><w:body><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:rPr><w:b/></w:rPr><w:t>&amp;plusmn &amp;plusmn &amp;plusmn &amp;plusmn &amp;plusmn &amp;plusmn &amp;plusmn &amp;plusmn &amp;plusmn &amp;plusmn &amp;plusmn</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"ListParagraph\"/><w:numPr><w:numId w:val=\"1\"/></w:numPr></w:pPr><w:r><w:t>Imagine you need to subtract one number from another using MATLAB.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"ListParagraph\"/><w:numPr><w:numId w:val=\"1\"/></w:numPr></w:pPr><w:r><w:t>You will not be using eval for this task.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"ListParagraph\"/><w:numPr><w:numId w:val=\"1\"/></w:numPr></w:pPr><w:r><w:t>Given two ASCII strings representing two integers X and Y.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"ListParagraph\"/><w:numPr><w:numId w:val=\"1\"/></w:numPr></w:pPr><w:r><w:t>Each of them has only 12 or less ASCII characters.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"ListParagraph\"/><w:numPr><w:numId w:val=\"1\"/></w:numPr></w:pPr><w:r><w:t>Each of them represents signed integers, such as '+2345'</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"ListParagraph\"/><w:numPr><w:numId w:val=\"1\"/></w:numPr></w:pPr><w:r><w:t>Please output the result of (X-Y) in a similar style.</w:t></w:r></w:p></w:body></w:document>"},{"partUri":"/matlab/output.xml","contentType":"text/xml","content":"<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\" ?><embeddedOutputs><metaData><evaluationState>manual</evaluationState><layoutState>code</layoutState><outputStatus>ready</outputStatus></metaData><outputArray type=\"array\"/><regionArray type=\"array\"/></embeddedOutputs>"}]}

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7695 Solutions
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Last Solution submitted on Oct 01, 2020

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Mohamed Atyya on 30 Oct 2017

good

nipun garg on 8 Jun 2018

function z = mysub(x,y)
z = num2str( str2num(x) - str2num(y) );
end

why this is not working for this code?

Matt Offredi on 8 Mar 2019

Nice

Mark Sanderson on 14 Mar 2019

Hi. My code only prints out '-' for a negative number but not '+' for a positive. Can anyone help? function Z = mysub(X,Y); W = (str2num(X))-(str2num(Y)); Z = num2str(W); end

Rafael S.T. Vieira on 2 Jul 2020

actually each of them has 14 characters or less...15 if we count the signs.

Rafael S.T. Vieira on 2 Jul 2020

Mark Sanderson, if W > 0 Z = ['+' ...]

Solution Comments

Solution 2178846

1 Comment

1 Comment

Maryam HCTRAK Yousef on 28 Mar 2020

piece of cake

Solution 1641172

1 Comment

1 Comment

wu on 10 Oct 2018

+-=

Solution 1596845

1 Comment

1 Comment

A C on 31 Jul 2018

string to double and sprintf

Solution 1355159

1 Comment

1 Comment

Giuseppe Ridinò on 23 Nov 2017

Need to calculate the difference ... not the sum! :)

Solution 1312264

1 Comment

1 Comment

Looky on 24 Oct 2017

Sorry for this...just had to try regexp. Somehow, the size of this is calculated completly wrong.....

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Problem 564. How to subtract?

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Problem 564. How to subtract?

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