Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

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
MOD
Dane Parchment
Treehouse Moderator 11,074 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;
printf();

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!