Each variable name must correspond to a single format specifier

Solution:



Formatting Text

To convert data to text and control its format, you can use formatting operators with common conversion functions, such as num2str and sprintf. These operators control notation, alignment, significant digits, and so on. They are similar to those used by the printf function in the C programming language. Typical uses for formatted text include text for display and output files.

For example, %f converts floating-point values to text using fixed-point notation. Adjust the format by adding information to the operator, such as %.2f to represent two digits after the decimal mark, or %12f to represent 12 characters in the output, padding with spaces as needed.

A = pi*ones(1,3);
txt = sprintf('%f | %.2f | %12f', A)


https://www.mathworks.com/help/matlab/matlab_prog/formatting-strings.html