Some of the tasks require general, proper functionality of a user-defined function and struct data type. some of the test cases involve unit testing of your function, independent of your calls from for this project, organize all code in one file, namely main. c. define a struct data type titled hill that has the following subitems: a char array of length 20 titled name, which stores the name of the hill. an int array of length 2 titled loc, which stores the (x, y) coordinates, in order, for the location of the peak of the hill. a double variable titled height, which stores the height of the hill. a double variable titled slope, which stores the steepness parameter for t