double conditional in one line
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By chance I tried a sentence like
0<x<1
i cannot find any documentation for this.
At the beginnnig looks like weird
>> x=0.23: 0<x<1
ans =
logical
0
but
>> x=0.23: 0.1<x<1.1
ans =
logical
1
You can concatenate more, exemple
>> x=1; y=2; 0<x<y<2
ans =
logical
1
I still cannot figure out how it really works. Any help?
采纳的回答
At the beginnnig looks like weird
>> x=0.23: 0<x<1
This does not ask the question "Is x between 0 and 1 exclusive?" It is instead interpreted as:
x = 0.23;
y = (0 < x) < 1
The first part of the expression for y, (0 < x), returns either false (treated as 0) or true (treated as 1) depending on the value you specified for x. In this case since 0 is less than 0.23, it is true. So y becomes:
y = true < 1
Since true is treated as 1 and 1 is not less than 1, y is false.
Your second expression, x=0.23: 0.1<x<1.1, will always return true. Both false (0) and true (1) are strictly less than 1.1 so it doesn't matter whether 0.1 is less than x or not.
x = 0.23;
z = 0.1<x<1.1
z = (0.1 < x) < 1.1
z = true < 1.1
x = Inf;
z = 0.1<x<1.1
If you enter this in the Editor, Code Analyzer should warn about that pattern and suggest the approach others have already recommended earlier, using two separate tests combined using the & or && operators.
x = 2;
z = (0.1 < x) & (x < 1.1)
更多回答（2 个）
You need to be using '&'
x=0.23;
0<x & x<1
You have to join the multiple conditions with a logical operator. For example, the condition 0<x<1 is written like this
x=0.23;
0<x && x<1
and this one 0<x<y<2 is written like this
x=1;
y=2;
0<x && x<y && y<2
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