how to use if statement with arrays

I am trying to take a section of a 1D array and test if it would be less than a value and if it is the display error, The only thing I am getting back is the array itself.

code:

A=[11 9 17 16 29 41 42 65 88]

if A(1:4)>10

disp("error in hw catagory, please fix hw scores")

end

if A(5:6)>30

disp("error in quiz catagory, please fix quiz scores")

end

if A(7:8)>50

disp("error in midterm catagory, please fix midterm grades")

end

if A(9)>100

disp ("error in final catagory, please fix final scores")

end

Answer 1

[TA]

This might solve what you're trying to do:

if (mean(A(1:4)>10) > 0)

disp("error in hw catagory, please fix hw scores")

end

Using logical "A(1:4)>10" would tell you about whether any of the case contained within if statement is true or not.

[Stephen23]

Simpler to use any:

if any(A(1:4)>10)