Printing float values ​​with sprintf

Question

Now I have:

printf('Rating: %.2F', $rating);

which prints like:

4.00

How can I show the initial zero only if there is something to show after it?

For instance:

• 4.00 should be 4
• 4.20 should be 4.2
• 4.02 should be 4.02 :)

Answer 1

 printf("Rating: %g\n", 4.00); printf("Rating: %g\n", 4.20); printf("Rating: %g\n", 4.02); 

prints

 Rating: 4 Rating: 4.2 Rating: 4.02 

This way values ​​without printf will be printed

demo