is this code @echo off

REM Input
set /p num=Enter a number: 

REM Computation
set /a square=%num% * %num%

REM Display the result
:displayResult
echo The square of %num% is %square%
pause same to this given? Write a batch file that will illustrate the use of function for computing the square of a number. There must be three other functions aside from the main (). The first function must be responsible for inputting the data, the second for computation of squares and the third, for displaying the result.