Chapter 3, Problem 10AW

Program Plan Intro

“if” statement:

 “if” statement is used to make a decision structure, which permits the program to hold more than one path of execution.

• • The indented statement is executed only when the condition is “true”.
• • If the given condition is “false”, it skips the indented statements.

Turtle:

Turtle graphics is a method which is used to simulate a “turtle” to draw a simple graphics based on the given commands.

• • It provides numerous functions that use decision structures which determines the state of the turtle and performs actions according to the conditions.

Import turtle:

A turtle is the predefined module in a program and in order to use the turtle in a program the turtle module must be imported.

• • To import the turtle module use “import turtle” in the program.

Algorithm:

Algorithm to determine whether the turtle is inside a rectangle.

• • Check whether the rectangle’s upper-left corner is at (100,100) using “xcor()”.
• • Check whether the rectangle’s lower-right corner is at (200,200) using “ycor()”.
• • If so, hide the turtle using the function “hideturtle”.