converting matlab code to c++

[kgrl]

Anyone can convert the following matlab code to c++ ?

Thanks!

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function [ v d] = power_method( A )
% for finding the largest eigen value by power method


disp ( ' Enter the matrix whose eigen value is to be found')

% Calling matrix A

A = input ( ' Enter matrix A : \n')
% check for matrix A

% it should be a square matrix

[na , ma ] = size (A);
if na ~= ma
disp('ERROR:Matrix A should be a square matrix')
return
end

% initial guess for X..?

% default guess is [ 1 1 .... 1]'

disp('Suppose X is an eigen vector corresponding to largest eigen value of matrix A')
r = input ( 'Any guess for initial value of X? (y/n): ','s');
switch r
case 'y'
% asking for initial guess
X0 = input('Please enter initial guess for X :\n')
% check for initial guess
[nx, mx] = size(X0);
if nx ~= na || mx ~= 1
disp( 'ERROR: please check your input')
return
end
otherwise
X0 = ones(na,1);
end

%allowed error in final answer

t = input ( 'Enter the error allowed in final answer: ');
tol = t*ones(na,1);
% initialing k and X

k= 1;
X( : , 1 ) = X0;
%initial error assumption
err= 1000000000*rand(na,1);
% loop starts

while sum(abs(err) >= tol) ~= 0
X( : ,k+ 1 ) = A*X( : ,k); %POWER METHOD formula
% normalizing the obtained vector
[ v i ] = max(abs(A*X( : ,k+ 1 )));
E = X( : ,k+ 1 );
e = E( i,1);
X(:,k+1) = X(:,k+1)/e;
err = X( :,k+1) - X( :, k);% finding error
k = k + 1;
end

%display of final result

fprintf (' The largest eigen value obtained after %d itarations is %7.7f \n', k, e)
disp('and the corresponding eigen vector is ')
X( : ,k)