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Control Structures

Learn about the syntax and usage of if statements in Python's control structures. Explore different examples to understand how to create decision-making steps in your programs.

jerrypeterson
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Control Structures

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  1. Control Structures If Else Statement

  2. S S E …consecutive steps (or groups of steps) processed one after another in the order that they arise. Q U A bit like reading through a cooking recipe, one line at a time. E N C E

  3. Sometimes we want to test if one condition is true or false. For example, IF Sarah > 16, then she can learn to drive ELSE she is too young to drive

  4. …a decision-making step. Condition? Yes No False Block True Block

  5. In PYTHON, what is the SYNTAX for the IF statement? if<condition>: <block of code executed if true> else: <block of code executed if false> Name='Sydney' if len(Name)>15: print('You have a long name!') else: print('You have a short name!') An example of PYTHON IF Statement Syntax

  6. Task 1 • Create a program that prompts the user for their age • If their age is less than 14 it should produce a simple • funny statement • 3) If their age is greater than or equal to 14, it should produce a • different statement • 4) Create your program in SCRIPT mode and save it as Simple • If Statement

  7. Task 2 • Create a program that prompts the user for their NAME and the YEAR • they were born. • If their year is after 1999, the program should output • ‘Welcome NAME, you are a 21st Century Child!’ • 3) If their year is not after 1999, the program should output • ‘Welcome NAME, you are a 20th Century child!’ • 4) Create your program in SCRIPT mode and save it as Simple • If Statement 2

  8. Task 3 • Create a program that prompts the user for a PASSWORD • If the entered password is less than 8 characters long, it should output • ‘Password Rejected.’ • 3) If the entered password is at least 8 characters long, it should output • ‘Password Accepted.’ • 4) Create your program in SCRIPT mode and save it as Simple • If Statement 3

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