Your assignment is to write a class averaging program that outputs a summary of classes and students, given input data in a specific format (more on that in a bit). For a high-level view, look at the sample program execution below. Your program will read from an input file (courseData. txt) a number of data items, stored in the file in the following order:(1) Global data is on the first line, as this applies to all classes. This first line holds the weights to use for all classes, in this order: program weight, midterm weight, and final exam weight.(2) Every other line in the file is specific to a class, and so the next line starts with a course identifier(161, 162, or 263, and this is an int).(3) After the course identifier ,a set of lines belonging to that course are listed, each with a student ID (four digits, such as 1234),an unweighted program score, an unweighted midterm score, and an unweighted final score.(4) Reaching a 0 indicates the end of input for a specific class ,or the end of file if all class data has been consumed.