The Rectangle has two data members upperLeft and lowerRight points, that represents upper left and lower right coordinates, respectively. Therefore a rectangle can be represented by a nested structure having two structures of the type POINTS as defined below. typedef struct{ Point upperLeft; Point lowerRight; }Rectangle; implement the following functions: a. float length (Rectangle rec);  //returns the length of the rectangle b. float width (Rectangle rec); //returns the width of the rectangle c. float area (Rectangle rec); //returns the area of the rectangle d. float perimeter(Rectangle rec); //returns the area of the rectangle

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User Defined DataType

The data type is a format to store data that contains a particular range or type of value. It specifies which type of value a variable should have. In other words, a data type describes the type of data that variables can store. When a program stores data in the variables, then every variable needs to be assigned value that falls within the range of its data type. The following are some of the data types: