Write a function to calculate the area of a circle
Date: 2023-07-31 14:32:20
Hi everyone,
I need to write a function named areaCircle to calculate the area of a circle with the ff conditions: 1. The function should take one input that is the radius of the circle. 2. The function should work if the input is a scalar, vector, or matrix. 3. The function should return, one output, the same size as the input, that contains the area of a circle for each corresponding element. 4. If a negative radius passed as input, the function should return the value -1 to indicate the error.
I already have my code for the function that satisfies 1 to 3 except for 4. My code is as shown below:
function area = areaCircle(r)
if any(r<0)
A = r % array of random integers
negIndices = A < 0;
B = A; % copy A into new array B
B(negIndices) = -1 % replace the negative values in B with -1
area = B(negIndices);
else
area = pi*r.^2;
end
end
And the test inputs area:
r1 = 2;
area1 = areaCircle(r1)
r2 = [2 5; 0.5 1];
area2 = areaCircle(r2)
r3 = [1 1.5 3 -4];
area3 = areaCircle(r3)
area3 must give an array of values where the last element must be -1 to show an error. It must not be used for the calculation of the area. Thanks in advance!