A store has been attaching tags with barcodes to merchandise, allowing employees to use barcode readers to scan merchandise at the cash register. However, the wireless barcode readers need new batteries often, and using this system for inventory tracking is very time-consuming. What emerging technology should the department store use? touch screen

Smart card

RFID

CAD

pls hurry i need this answer right now.

Consider the following statements: struct nametype{string first; string last; }; struct coursetype{string name; int callnum; int credits; char grade; }; struct studenttype{nametype name; double gpa; coursetype course; }; studenttype student; studenttype classlist[100]; coursetype course; nametype name; mark the following statements as valid or invalid. if a statement is invalid, explain why.a.) student.course.callnum = "csc230"; b.) cin > > student.name; c.) classlist[0] = name; d.) classlist[1].gpa = 3.45; e.) name = classlist[15].name; f.) student.name = name; g.) cout < < classlist[10] < < endl; h.) for (int j = 0; j < 100; j++)classlist[j].name = name; i.) classlist.course.credits = 3; j.) course = studenttype.course;

Hey so i was just trying out some game hacks so i took a paste from online and built it in my visual studio and then suddenly my computer was working or clicking on stuff on its own am i hacked?

Uget brainliest if accurate mary has been given the responsibility of hiring a person for the position of a software testing officer. which management function would mary achieve this responsibility?