Find all values between 2 index columns

2021 3 2
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更新时间：2021 3 2
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Say two columns (C) be this:
1 5
7 13
20 32
These are index values. The 1st column is the starting index, the 2nd column the ending index.
I want to find all values from (dataset) between these 2 index columns.
If i use this code, it only gives me values for the 1st row.
value = dataset(C(:,1):C(:,2));
How do I code this, so that it gives me all the values for every index row?
Many thanks.

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KSSV
KSSV 2021-3-2
编辑：KSSV 2021-3-2

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for i = 1:size(c,1)
value = dataset(C(i,1):C(i,2));
end

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Jonathan Cheong
Jonathan Cheong 2021-3-2
Thanks for the answer, although I do get this error when I try it out:
Index in position 2 exceeds array bounds (must not exceed 2).
KSSV
KSSV 2021-3-2
There was type error...edited the code now...
Jonathan Cheong
Jonathan Cheong 2021-3-2
Yea, it only gives me 1 value.
for ai = 1:size(ddindex,1)
ddvalue = rain(ddindex(ai,1):ddindex(ai,2));
end
Here is my code, just to make sure I'm not doing anything wrong.
To clarify, I've attached the datasets.
Thanks in advance for helping me out.
KSSV
KSSV 2021-3-2
load index.mat ;
load Rain.mat ;
N = size(ddindex,1) ;
ddvalue = cell(N,1) ;
for ai = 1:size(ddindex,1)
ddvalue{ai} = rain(ddindex(ai,1):ddindex(ai,2));
end

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