MATLAB: When i run the script without the fprintf line i get the right answer. however when i apply the fprintf line i get the error “index exceeds matrix dimensions.” how do i fix this? (the functions are in different .m files obviously)

Question

SAS_TriangleArea Function

%%%%%%%%%%%%%%%%%%%%%%%%%

function [ triangleArea ] = SAS_TriangleArea( a, b, alpha )

%SAS_TriangleArea Finds Triangle Area by using side-angle-side

triangleArea = (1/2)*a*b*sind(alpha);

end

%%%%%%%%%%%%%%%%%%%%%%%%%

%SSS_TriangleArea Function

function [ triangleArea ] = SSS_TriangleArea( a, b, c )

%SSS_TriangleArea computes area of side-side-side triangle

S = (a + b + c)/2;

triangleArea = sqrt(S*(S-a)*(S-b)*(S-c));

end

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

% Test Case 1

w = 1;

x = 1;

z = 1;

y = sqrt(2);

alpha = 90;

triangle1 = SAS_TriangleArea(w,x,alpha);

triangle2 = SSS_TriangleArea(x,y,z);

triangleArea = triangle1 + triangle2;

fprintf('The area for Test Case 1 is: %3.2f', triangleArea)

Answer 1

Works for me:

>> TriangleArea_Test
The area for Test Case 1 is: 1.00

Try this:

which fprintf

Maybe you have a variable named "fprintf" that is shadowing the built-in fprintf function. If so, clear it first.

SIDE NOTE: You are going to want to put a newline at the end of your fprintf format. E.g.,

fprintf('The area for Test Case 1 is: %3.2f\n', triangleArea)  <-- Added the \n