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# for

language keyword for loops

### Description

Used to define loops. Its syntax is:
`for variable=expression ,instruction, .. ,instruction,end`

`for variable=expression do instruction, ,instruction,end`

If `expression`

is a matrix or a row vector, `variable`

takes as values the values of each column of the matrix.

A particular case uses the colon operator to create regularly
spaced row vectors, and is similar to traditional for loop forms:
`for variable=n1:step:n2, ...,end`

If `expression`

is a list `variable`

takes as values the
successive entries of the list.

According to the Code Conventions for the Scilab Programming Language it is recommended:

Start each statement on a new line.

Write no more than one simple statement per line.

Break compound statements over multiple lines.

For example, use:

for i = 1:5 disp(i); end

rather than

for i = 1:5 disp(i); end

The number of characters used to define the body of any
conditional instruction (if while for or select/case) must be limited to
16k. |

### Examples

// "traditional" for loops n=5; for i = 1:n for j = 1:n a(i,j) = 1/(i+j-1); end; end for j = 2:n-1 a(j,j) = j; end; a for j= 4:-1:1 disp(j); end // decreasing loop //loop on matrix columns for e=eye(3,3), e, end for v=a, write(6,v), end for j=1:n, v=a(:,j), write(6,v), end //loop on list entries for l=list(1,2,'example'); l, end

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