Not Enough Input Arguments

Anyone knows how I can fix a 'not enough input arguments' error? I have the code below, and it points to my if statement. Thanl you!

function C = first(x,y)
if (x >= 0 && y >= 0)
    C = x + y;
elseif ((x >= 0) && (y < 0))
    C = x + y.^2;
elseif ((x < 0) && (y >= 0))
    C = x.^2 + y;
elseif ((x < 0) && (y < 0))
    C = x.^2 + y.^2;
end
end

Answer 1

[Steven Lord]

Your function can be called with at most two inputs, and since it uses both inputs on the line you called out it must be called with at least two inputs. So you need to call it with exactly two inputs.

[Karina Lopez Zamora]

So function C(x,y) = first(x,y) or when I assigned C to the expressions above?

Sorry, I'm still learning MATLAB.

[Walter Roberson]

xin = randn()

xin = -1.6940

yin = randn()

yin = -0.3612

output = first(xin, yin)

output = 3.0003

function C = first(x,y)
if (x >= 0 && y >= 0)
    C = x + y;
elseif ((x >= 0) && (y < 0))
    C = x + y.^2;
elseif ((x < 0) && (y >= 0))
    C = x.^2 + y;
elseif ((x < 0) && (y < 0))
    C = x.^2 + y.^2;
end
end