Hello, I was trying to type a printf statement in the Challenge task 2. I stuck on this step. Cannot move further.

here is your issue:

printf("%f A ball with a radius of 14.5 inches.\n", radius); return 0;

First, you dont need to return 0. Only provide what the challenge asks for.

Secondly, you need to use a format specifier in place of the 14.5 in your string. Using a format specifier allows you to insert the values of variables into a string. In this case you have created a variable called radius. You want to be able to display that variable in the string, not just a static value.

You can print a string with the value of a variable in it like so:

float someVariable = 10.0;
printf("This is a string with this variable's value of: %f inside it", someVariable);

which will output This is a string with this variable's value of: 10.0 inside it.

in your case, you need to print the variable where you currently have 14.5, so just replace 14.5 with %f, and add a comma and the variable name, radius, after it as shown in the example above.

Hi Stone, Thank you very much for your explanation. It was very helpful. Many thanks, Elmira