The Following Function Was Designed to Compute the Largest Integer

Essay

The following function was designed to compute the largest integer whose square is no greater than N,where N is assumed to be a positive number.(If N is 5,then the function should report the value 2.)Find and correct the error.
$\begin{array} { l } \text { def squareRoot } ( \mathrm { N } ) \text { : } \\\mathrm { X } = 0 \\\text { while } ( \mathrm { X } * \mathrm { X } < = \mathrm { N } ) \text { : } \\\mathrm { X } = \mathrm { X } + 1 ; \\\text { return } \mathrm { X }\end{array}$