Write a program that accepts six input values: year, month, day, hours, minutes, and seconds. The program should print one value, the Unix time number ingoring time zones. This program should be written in the C programming language(NOT C++), do not use operating system calls, no variables(do not use an assignment statement inside a function), Inputs are Command line parameters. If the year is less than 1970(prior to the UNIX Epoch), the output should be something like "Invalid input, that is before the unix epoch.", you are NOT required to validate day, month, hour, minute, or second values.