In C Programming, an array can be defined as number of memory locations, each of which can store the same data type and which can be referenced through the same variable name. Arrays can be of two types i.e. One Dimensional Array (such as lists) and Multidimensional Arrays (such as tables or matrices).
A pointer is a variable that represents the location of a data item, such as a variable or an array element. Pointers are used frequently in C, as they have a number of useful applications. For example, pointers can be used to pass information back and forth between a function and its reference point. Pointers provide a way to return multiple data items from a function via function arguments to
be specified as arguments to a given function.
This tutorial covers many topics in VGA programming in the C programming language. Tutorial assumes that the programmers have a comprehensive understanding of C and should also have a familiarity with DOS and BIOS function calls and interrupts. Knowledge of trigonometry and geometry would also be helpful.
