将向量{x，y，z}插入另一个向量？

Question

I'm looking for some pointers on inserting or pushing a vector into another vector.

The idea is I have vec1 = {1, 2, 3} for example. Then I want to insert this into vec2 before next vec1 = {4, 5, 6} turns up.

The problem is I don't want vec 2 to read {1, 2, 3, 4, 5, 6}, I want it to read

vec2 = {1, 2, 3}, {4, 5, 6},... etc

Is this possible or I'm I completely mad. Any help will be great.

Thanks.

Answer 1

You can use a vector of vector of integers. Like this :

std::vector<std::vector<int>> vecofvecs = { {1,2,3}, {4,5,6} };

You can also use this :

#include <vector>
int main()
{
    std::vector<std::vector<int>> vecofvecs;
    std::vector<int> subvec1 = { 1,2,3 };
    std::vector<int> subvec2 = { 4,5,6 };

    vecofvecs.push_back(subvec1);
    vecofvecs.push_back(subvec2);

    return 0;
}