If Statements

Suppose you had a program the took user input. You plan to insert that input into a sentence. But there's a problem: the user may have failed to add the input. So we'd better check the input before we use it.

Look over the starter code to see how you might do it. Run the code. Now update the string assigned to input so it is no longer an empty string and run the code again. No warning message this time, right?

We just used an if statement. It's a conditional statement that:

• Begins with the if keyword
• Defines a condition or test (in parentheses). The condition should evaluate to true or false.
• Defines a block of code inside a pair of curly braces. That code will only run if the condition evaluates to true.

Tests

Suppose you have a program that helps a user reset the password. You want it to enforce a minimum length of 8 characters. To pass the tests:

• create a variable called validPassword and assign it a string that will pass the conditional check.
• create a variable called invalidPassword and assign it a string that will fail the conditional check.

For now, you didn't have to write the password checking code. But think about how you could use an if statement to check the length of a string.