C++ How to dynamically create a 2D vector

Question

I\'m trying to create an n x n vector that I can later cout as a table/matrix. Xcode points to the = in the for loop and tells me No

Answer 1

The simple solution is to use the relevant constructor of std::vector, initializing it to n elements each having the value of val - no loops necessary.

std::vector (n, val);

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Having your original snippet we would end up with the following, which will initialize row to have n std::vectors, each of which having n elements.

std::vector > row (n, std::vector (n));