Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

iOS Objective-C Basics (Retired) Fundamentals of C Variables

Help with 2nd part of variable challenge

printf "A ball with a radius of %f inches. What am i doing wrong here?

1 Answer

Dane Parchment
Dane Parchment
Treehouse Moderator 10,991 Points

Well first lets correctly set up the printf statement. Let's create the variable and set up the printf statement.

float radius = 14.5;

You had forgotten to add the parantheses to printf statement and end with a semicolon now you need to add the text and identifier (which in this case is %f)

float radius = 14.5;
printf("A ball with a radius of %f inches");

Now the last and final part of writing a printf statement is adding the variable(s) that the identifier is referring to.

float radius = 14.5;
printf("A ball with a radius of %f inches", radius);

That should be it! Hopefully that helped!