Identity matrix: Difference between revisions
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=={{header|Frink}}==
This does not use the Matrix.frink library, which has methods to create an identity matrix, but shows how to build a "raw" identity matrix as a two-dimensional array, and shows how to nicely format it using built-in routines.
<lang frink>n = parseInt[input["Enter matrix dimension as an integer: "]]
println[
{{out}}
<pre>
Enter matrix dimension as an integer: 3
┌ ┐
│1 0 0│
│ │
│0 1 0│
│ │
│0 0 1│
└ ┘
</pre>
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