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iOS

Posted by brycecampbell
brycecampbell
2,112 Points

variables: first challenge part 2

Add a printf statement to print the radius variable. Here is what your output should look like: A ball with a radius of 14.5 inches.

3 Answers

brycecampbell
brycecampbell
2,112 Points

i know that printf substitutes %f (or other %?) with the variable that follows the string after the comma.but every time I get to the first challenge part 2 where it says "Add a printf statement to print the radius variable. Here is what your output should look like: A ball with a radius of 14.5 inches" . It is saying i have the correct string, but not the correct format...whenever i input this (printf("%f A ball with a radius of 14.5 inches.\n", radius); what is the correct format please and thank you... srry but i have a hard time understanding

Stone Preston
Stone Preston
42,016 Points

see above. your code

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

outputs 

14.5 A ball with a radius of 14.5 inches.

which is not right. you need

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

which outputs 

A ball with a radius of 14.5 inches.

see how the value of the variable gets placed into the string where the format specifier is?

Stone Preston
Stone Preston
42,016 Points
Stone Preston
Stone Preston
42,016 Points

"Im adding the printf() statement in task 2 for this challenge and Im not sure why this is not passing: float radius = 14.5; when input printf("%f A ball with a radius of 14.5 inches.\n", radius);"

because the variable is placed into the string where the format specifier is. The output of 

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

is 

14.5 A ball with a radius of 14.5 inches
brycecampbell
brycecampbell
2,112 Points

thank you i appreciated the help

Stone Preston
Stone Preston
42,016 Points
Stone Preston
Stone Preston
42,016 Points

I answered this question for you earlier here. Did you look at that at all?

brycecampbell
brycecampbell
2,112 Points

every time trying to input prinf("%f", radius); it say a syntax error

Stone Preston
Stone Preston
42,016 Points

the questions says the output should be 

A ball with a radius of 14.5 inches

 printf("%f", radius);

does not output that result. You need the words A ball with a radius of before the specifier and inches after

brycecampbell
brycecampbell
2,112 Points

Im adding the printf() statement in task 2 for this challenge and Im not sure why this is not passing: float radius = 14.5; when input printf("%f A ball with a radius of 14.5 inches.\n", radius);

Stone Preston
Stone Preston
42,016 Points

no problem