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

Add a printf statement to print the radius variable. Here is what your output should look like: A ball with a radius of

float radius=14.5: printf("cm, to ,inche\n");

float radius= 14.5;

2 Answers

Chase Marchione
Chase Marchione
155,055 Points

Hi Birima,

  • \n is used if we want to add a new line. In this objective, that won't be necessary.

  • Within the string, we want to reference the value of the radius variable. To do that, we need a placeholder, which is also known as a formatter. Specifically, we need the formatter for a float variable, since the value we want to print is stored within a float type variable. The formatter that is used for floating point numbers is %f, and we'll write that where we want the value to be printed within the string. After that string, we'll write the name of the variable that we want to pull our value from.

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

Hope this helps!

float radiud=14.5; printf("A ball with a radius of %f inches", radius); Thanks indeed it function perfect