Answers for "c++ new vector with size"

c++ initialize vector of vector with size

vector<vector<int>> v(10, vector<int>(10));

c++ create vector of size

// create a vector with 20 integer elements
std::vector<int> arr(20);

for(int x = 0; x < 20; ++x)
   arr[x] = x;

c++ vector initialize size

vector<Entry> array(1000);//size of 1000