Problem 854. Find the list of all open files

Solution 183406

Submitted on 30 Dec 2012

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Test	Status	Code Input and Output
1	Pass	%% 1 file fclose('all'); fid = fopen('titi.txt','w+') assert(isequal(your_fcn_name, {'titi.txt'})) fid = 3
2	Fail	%% 2 files fclose('all'); fid = fopen('titi.txt','w+') fid = fopen('cloclo.mat3','w+') assert(isequal(your_fcn_name, {'titi.txt','cloclo.mat3'})) Error: File identifier must be an integer-valued scalar of type double.
3	Fail	%% zero files fclose('all'); assert(isequal(your_fcn_name, {})) Error: File identifier must be an integer-valued scalar of type double.

Test

Status

Code Input and Output

Pass

%% 1 file fclose('all'); fid = fopen('titi.txt','w+') assert(isequal(your_fcn_name, {'titi.txt'}))

fid = 3

Fail

%% 2 files fclose('all'); fid = fopen('titi.txt','w+') fid = fopen('cloclo.mat3','w+') assert(isequal(your_fcn_name, {'titi.txt','cloclo.mat3'}))

Error: File identifier must be an integer-valued scalar of type double.

Fail

%% zero files fclose('all'); assert(isequal(your_fcn_name, {}))

Error: File identifier must be an integer-valued scalar of type double.