Largest Value from the Row Sums of A

I am to write a MATLAB function that takes as input a nonempty 2-dimensional array A and returns the largest value from the row sums of A. I currently have a program that works for everything except when the largest value is negative. I am asking for help to figure out how to open the program to all numbers. I am not allowed to use the max(A) command. Here is what I have so far:

function MaxRowSum = ex1(A)

%

%

[NRows,NCols] = size(A);

RowSum = zeros(NRows, 1);

MaxRowSum = zeros(1,1);

Largest = 0;

for row = 1:NRows

for col = 1:NCols

RowSum(row) = RowSum(row) + A(row,col);

end

if RowSum(row) > Largest

MaxRowSum = RowSum(row);

else

end

end

Answer 1

[Bruno Luong]

Initialize with

Largest = -Inf % and not 0

[Sophie Culhane]

Thank you!