Without using a 2D array

Write a program in C++

With the user input find out

The matrix is "N x N"

The matrix determinant

User input is entered only with spaces and enter for the next line, example: "This is all the user will input", theres no press 1 to keep adding, or 2 to exit.

1 -2 3

4 5 -6

7 -8 9

how can i use getline(cin, xxxx) to read this, the idea is to read the first line "1 -2 3" and count how many numbers/columns in the row, so that i can then loop the other rows with an expected number of rows and columns, if the row is incomplete an error message should pop up.

Example:

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User Input 1:

1 2 -3

4 5 0

Output 1:

Not a square matrix!

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User Input 2:

1 0 2

-1 0 -1

0 1 0

Output 2:

Yes! Matrix is square N x N, where n is = 3.

the determinant is: -1

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User Input 3:

1 2 3 4 5

2 3 4 5 6

3 4 5 6 7

4 5 6 7 8

5 6 7 8 9

Output 3:

Yes! Matrix is square N x N, where n is = 5.

The determinant is: 0

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User Input 4:

11 21 31 41 51

-2 3 -4 5 6

13 14 15 16 17

4 -5 6 -7 8

-5 6 -7 8 -9

Output 4:

Yes! Matrix is square N x N, where n is = 5.

The determinant is: 7616

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User Input 5:

1 2 3

4 5 6

7 8

Output 5:

Not a square matrix!

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Please keep in mind negative numbers are also allowed, I need to use linked list or vector of vectors, but not a 2D-array

Thank you

Thank you for reading, we can not use a 2D-array or an array so Linked list or vectors are the options, but mainly I cant seem to get the user input to start this. thank you