Problem 564. How to subtract?

Created by AMITAVA BISWAS

Solve Later

± ± ± ± ± ± ± ± ± ± ±

Imagine you need to subtract one number from another using MATLAB.
You will not be using eval for this task.
Given two ASCII strings representing two integers X and Y.
Each of them has only 12 or less ASCII characters.
Each of them represents signed integers, such as '+2345'
Please output the result of (X-Y) in a similar style.

Solve

Solution Stats

7505 Solutions
1331 Solvers

Last Solution submitted on Jan 27, 2020

Last 200 Solutions

Problem Comments

4 Comments

4 Comments

Show 1 older comment

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

Solution Comments

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.....

Problem Recent Solvers1331

Problem Tags

Problem 564. How to subtract?

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers1331

Suggested Problems

More from this Author100

Problem Tags

Problem 564. How to subtract?

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers1331

Suggested Problems

More from this Author100

Problem Tags

Players