Error: File: testem.m Line: 87 Column: 5 Invalid expression. Check for missing multiplication operator, missing or unbalanced delimiters, or other syntax error. To construct matrices, use brackets instead of parentheses.

Kindly help me in rectifing it

Answer 1

[Steven Lord]

If you're going to put the end keyword (or the elseif keyword that's part of an if statement) on the same line as another statement, separate them with either comma or semicolon.

for k = 1:10, if k == 5, disp('Hello'), elseif k == 7, disp('Goodbye'), end, end % works
% What follows is the output of the commands above

Hello
Goodbye

Compare this with the version without commas.

for k = 1:10 if k == 5 disp('Hello') elseif k == 7 disp('Goodbye') end end % will not work
% What follows is the text of the error when I tried running the previous line

 for k = 1:10 if k == 5 disp('Hello') elseif k == 7 disp('Goodbye') end end % will not work
                                      ↑
Error: Illegal use of reserved keyword "elseif".

My personal preference is not to write multiple statements on one line like this. The following does take up more vertical real estate on screen, but it also (IMO) makes it easier to understand what end goes with what other keyword.

for k = 1:10
    if k == 5
        disp('Hello')
    elseif k == 7
        disp('Goodbye')
    end
end