Once it starts, it takes the input file name as an argument from commandline.

$2.$ The program uses the file name to open the file. The file has a number of lines. Each line has

two numbers separated by a comma. Therefore, there are actually two columns of numbers.

For example:

$312312,56877$

$2267,3698$

$3,3478$

$87907,768$

$3.$ The program processes the input data to calculate the average value of all valid numbers in

the first column and the largest value of all valid numbers in the second column. The print

out should be

The average value of all numbers in the first column: XXX$.$XXXX

The largest value of all numbers in the second column: XXXXX

The total number of rows in the file is: XXXX

The invalid numbers are: XXX$,$ XXX$,$ XXX$,...$