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

Posted by Brian Pemberton
Brian Pemberton
4,902 Points

Why is this the wrong format?

Not sure what I am doing wrong here.

variable_assignment.mm 
float radius;
radius = 14.5; 
printf("A ball with a radius of %.2f inches.",radius);

2 Answers

Nick Janes
Nick Janes
5,487 Points
Nick Janes
Nick Janes
5,487 Points

You said %.2f in your string. It should just be %f.

Ellen Tunik
Ellen Tunik
1,028 Points
Ellen Tunik
Ellen Tunik
1,028 Points

You are doing OK in general. %.2f means - two numbers after floating point - 14.50. %.3f - three numbers after floating point - 14.500. and so on %.1 - 14.5.

But I'm not sure what exactly the task is about and why you get some errors.

Nick Janes
Nick Janes
5,487 Points

For the challenge, they just want %f. This is what they're looking for.

float radius;
radius = 14.5;
printf("A ball with a radius of %f inches", radius);
Brian Pemberton
Brian Pemberton
4,902 Points

Thank you for your help I guess what is confusing is

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

outputs to 

A ball with a radius of 14.500000255 inches