MATLAB: How to format the output using fprintf to show a variable with a user defined amount of decimal places (this amount is stored in a variable)

Question

How can I format my output using fprintf to show a variable with a user defined amount of decimal places (this amount is stored in a variable)?

Answer 1

Example:

N = 4;
fprintf( '%.*f', N, pi)

On output, the * signals that the number of decimal places is to be read from a parameter.