How can I code vector index plus

n is an index of vector. C is a vector. How can I code that? Cn + C(n+1) C(n+1) is next(+1) index of n.

Answer 1

[John D'Errico]

Code what? If n is an integer, then

C(n) + C(n+1)

does exactly that.

Are you asking to form the sum of all consecutive pairs of elements? Be explicit about your question. Once you are able to ask a clear question, the answer is often trivial.

n = numel( C );
C(2:n) - C(1:(n-1))

[DongShin Yang]

Thank your answer. more informations are that [How can I modify vector indexs and values.]

[DongShin Yang]

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