To write to a file in Matlab, use the fopen function to open a file with write permission and the fprintf function to write text to the file. To read from a file, use the fopen function to open the file with read permission and the fscanf function to read data from the file. Matlab has functions like circshift to circularly shift matrix elements, sort to sort arrays in ascending or descending order, and issorted to check if elements are already sorted.

1. Matlab: Working with files

2. Writing filesTo write a new file, use the function: fid= fopen(‘<filename>’, ‘wt’);To write to a new file, use the function:fprintf(fid, ‘Hello, I am writing this into the file’);

3. Writing filesUse the following set of commands to create a new file and write a sentence into that file. View the file in notepad.

4. Writing files

5. Writing filesTo open a file in text mode, specify the permission using one of the listed Permission Value, and attach the letter 't'. For example, use 'rt' or 'wt+'.

6. Reading FilesUse the command ‘fopen(‘<filename>, rt’) to open a file to be read in text mode. Use the fscanf(fid, format, size)command to read form the file.

7. Reading Files

8. Reading Files

9. Shifting and Sorting matricesShift and Sort Functionscircshift Circularly shift matrix contents.sortSort array elements in ascending or descending order.sortrows Sort rows in ascending order.issorted Determine if matrix elements are in sorted order.

10. Shifting and Sorting matrices

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