Science:Math Exam Resources/Courses/MATH152/April 2013/Question A 30/Statement

Write a MATLAB for loop that generates a $20\times 20$ matrix C given by

$C={\begin{bmatrix}1&0&0&...&0\\0&2&0&...&0\\0&0&3&&0\\\vdots &\vdots &&\ddots &\vdots \\0&0&0&...&20\\\end{bmatrix}}$