1, we must first know how to use the print format variable of sprint function in matlab, similar to printf in C language. You can learn how to use the sprintf function by typing help sprintf in the command line window.

2. Let's look at an example using the sprintf function. Enter a=[ 1.256 2.356 4.789] in the command line window, press enter, enter sprintf('%.2f', a), and output to two decimal places in a matrix format.

3. It can be seen that all elements of matrix A are formatted and output two decimal places.

4. If we want to output a string, we can use sprintf('%s', b) format.

5. After pressing Enter, you can see that the output is the string matrix B..