How to implement 2D vector array?

Question

I\'m using the vector class in the STL library for the first time. How should I add to a specific row of the vector array?

struct x{
     vector 

        

Answer 1

Another way to define a 2-d vector is to declare a vector of pair's.

 vector < pair > v;

**To insert values**
 cin >> x >>y;
 v.push_back(make_pair(x,y));

**Retrieve Values**
 i=0 to size(v)
 x=v[i].first;
 y=v[i].second;

For 3-d vectors take a look at tuple and make_tuple.