Size of a matrix using vector c++

2d vector

#include <bits/stdc++.h>
using namespace std;
int main() 
{
  int rows = 2;
  int cols = 2;
  int val = 1;
  vector< vector<int> > v(rows, vector<int> (cols, val));  /*creates 2d vector “v[rows][cols]” and initializes all elements to “val == 1” (default value is 0)*/
  v[0][0] = 5;
  v[1][1] = 4;
  cout << v[0][0] << endl; //Output: 5cout << v[1][0] << endl; //Output: 1return 0;}

Source: quora.com

Size of a matrix using vector c++

// finding size of a square matrix
myVector[0].size();

Source: stackoverflow.com

Similar codes

1 vote307 views1 answer
Save all output in log file c cpp
C++
0 vote329 views1 answer
Http://nv-study.ru/http://nv-study.ru/http://nv-study.ru/
C++
0 vote338 views1 answer
Automatic legend matlab
C++
2 votes314 views1 answer
C++ switch string
C++
11 votes322 views2 answers
C++ get ascii value of char
C++
0 vote318 views1 answer
Qt asynchronous HTTP request
C++
0 vote361 views1 answer
Delete a node from binery search tree c++
C++
18 votes318 views5 answers
Cpp rand
C++
0 vote312 views1 answer
Find N Unique Integers Sum Up to Zero
C++
5 votes292 views4 answers
Memset function c++
C++