write a program that displays a checkered pattern of alternating blue and green squares. The colors should alternate in both the vertical and horizontal directions: it doesnt matter what the starting color (whichever cell you choose) is. The size and number of squares are input by the user. The required interaction is given below. The program should be structured to have three functions. 1) draw_square() with four parameters. This function draws a single square at a specified location with a certain size and filled with a certain color.

a) x the x coordinate of the point where the square is to be placed,

b) y the y coordinate of the point where the square is to be placed,

c) width, the length of the side of the square, and

d) color, the color to be used for filling the square. You are free to determine what the exact meaning of x and y are: for example, they could reference the top-left corner of the square.

2) draw_pattern with two parameters. This function calls draw_square() to draw a cer

a) width the length of the side of the smaller square and

b) number of squares, the number of squares in each row or column

3) main() with no parameters. This function gets the number of squares and the length of a side from the user and calls the function draw_pattern