$.$ Complete the program minmax.cpp which uses two functions readdata$()$ and minmax$()$ to

find the minimum and maximum of a set of floats stored in the file minmaxin.txt$.$

$-$ The main program opens the input and output files, and allocates a float array x$,$ then calls

the functions readdata$()$ and minmax$()$ and finally prints the minimum and maximum values

to the output file minmaxout.txt$.$

$-$ The input file minmaxin.txt includes a single column of data, where the first number $($an

int$)$ indicates the number of floats which follow. You can assume that the file holds no more

than $100$ values.

$-$ The function readdata$()$ reads the first number, n$,$ from the input file and then reads the

following n floats into the array.

$-$ The function minmax$()$ computes the minimum and maximum values found in the array.

Here is the expected program output:

The a r r a y has $80$ el em e n t s

The maximum v al u e i n the a r r a y i s $63.606$

The minimum v al u e i n the a r r a y i s $4.8089$

$/*$ F i l e : minmax $.$ cpp

Programmer : Date :

$*/$

$//$ i n c l u d e l i b r a r i e s

using namespace s t d ;

const int MXN $=100$; $//$ maximum arr a y s i z e

$//$ f u n c t i o n p r o t o t y p e s

int main $($ void$)$

$\{$

$//$ open i n p u t and o u t p u t f i l e s

$//$ d e c l a r e v a r i a b l e s and a l l o c a t e arr a y x

$//$ c a l l re a d d a t a $()$ t o read v a l u e s from t h e i n p u t f i l e t o t h e arr a y

$//$ c a l l minmax $()$ t o compute t h e minimum and maximum v a l u e s

$//$ p r i n t t h e r e s u l t s t o t h e o u t p u t f i l e

$//$ c l o s e f i l e s

return $0$ ;

$\}$

$//$ f u n c t i o n d e f i n i t i o n s

$4.$ Modify the previous program so that the array is dynamically allocated within the function

void readdata$().$ Call your new program minmaxd.cpp with output file minmaxdout.txt$.$

The output of the program will not change