Matlab Midpoint Rule (Rectangle Method)

Implementation of Midpoint Rule (Rectangle Method) (Integral Approximation) written in Matlab.

Enter beginning of interval: -2
Enter end of interval: 2
Enter number of iterations: 1000000
Integral is equal to:
5.3333

% TheFlyingKeyboard and released under MIT License
% theflyingkeyboard.net

intervalBegin = input("Enter beginning of interval: ");
intervalEnd = input("Enter end of interval: ");
iterations = input("Enter number of iterations: ");

step = (intervalEnd - intervalBegin) / iterations;
integral = 0;

for i = 1:iterations
  integral += step * Function(intervalBegin + (i - 1) * step);
end

disp("Integral is equal to: ");
disp(integral);

% TheFlyingKeyboard
% theflyingkeyboard.net
function y = Function(x)
  y = x * x;
end