i am getting error when i am reading file

%the program%
a = csvread('matrix.csv');
b = csvread('vector.csv');
disp(a);
disp(b);
n = length(b)
x = zeros(n,1)                                                                                                                                                                                                                          
aug = [a b]
for j = 1 : n-1
    for i = j+1 : n
        m = aug(i,j)/aug(j,j);
        aug(i,:) = aug(i,:)-m*aug(j,:);
    end
end
aug
x(n) = aug(n,n+1)/aug(n,n);
for k = n-1: -1 : 1
    x(k) = aug(k,n+1)-aug(k,k+1:n)*x(k+1:n) / aug(k,k);
end
x

%the error i get%
The optional second input to exist must be 'var', 'builtin', 'class', 'dir' or 'file'.

Error in csvread (line 34)
if exist(filename,'vector') ~= 2

Error in eva2gausseliminationmethod (line 1)
a = csvread('matrix.csv');

[Rik]

What does this line return?

clc,which csvread -all

[siddhanth madhavan]

E:\Program Files\Polyspace\R2019a\toolbox\matlab\iofun\csvread.m

[siddhanth madhavan]

this is what its returning

[siddhanth madhavan]

in my progran its not reding the file which i have

Answer 1

[Sobha T]

Please try using readmatrix() instead.

https://in.mathworks.com/help/matlab/ref/csvread.html

[siddhanth madhavan]

Error using readmatrix (line 146)

Unable to find or open 'matrix.csv'. Check the path and filename or file permissions.

Error in eva2gausseliminationmethod (line 1)

a = readmatrix('matrix.csv');

[siddhanth madhavan]

i am still getting this error