One approach is to use the built-in MATLAB function exist to check if the file exists and is readable.
Another approach is to use the “cdflib” function “cdflib.open” to open the CDF file and check if it is readable.
To avoid the program crashes, always use try-catch blocks. Put the code using which you are checking the file inside the try block and put the corresponding catch block.
Go through the below documentations:
Documentation for exist function.
Documentation for CDF Library.
Documentation for try-catch blocks.
