Write a program in C++ 3 and 4, 5 with a reference of question 3 please

3. Complete the program minmax.cpp which uses two functions readdata() and minmax() to find the maximum and minimum of a set of floats stored in the file minmaxin.txt. You can assume that the number of values in the file is less than 100. The first number in this file is an int indicating the number of floats which follow. The function readdata) opens the input file minmaxin.txt, reads the first number, n, and then reads the following n floats into an array. The file is then closed by the function. The function minmax() computes the minimum and maximum values found in the array. The main program prints the maximum and minimum. The content of the output file minmaxout.txt will be: The array has 80 elements The maximum value in the array is 63.606 The minimum value in the array is 4.8089 /* File: minmar.cpp Programmer: Date: #include #include using namespace std; const int MXN = 100; // maximum array size /* function prototype */ void readdata(/you fill in here */); void minmax (/* you fill in here */); int main(void) { ofstream out file ("minmaxout.txt"); float x [MXN); // the array int n; // the actual array size float max; // the marimum float min; // the minimum /read the data into the array */ readdata (/* you fill in here */); /* compute the marimum and minimum */ minmax /* you fill in here */); outfile