How can I replace a value that comes after a specific string in a text file?

I need to read a text file, find a specific string and change the value/values after that string.

For example, I want to change the grade of a specific student in a text file with the following format:

Adrian 7.8

Brian 8.8

Caroline 9

David 8.7

Jessica 9.5

What would be the best way to accomplish that? I am able to find the name, but I can't replace the grade.

Thank you!

Answer 1

[Antonio Ciociola]

Use textscan:

filename = 'nameofyourfile.txt';
fid = fopen(filename,'r');
[A] = textscan(fid,'%s %f')

Then you can rewrite your file (with new values) using "fprintf" :fprintf Help

[Ruchelly Almeida]

Thank you!