Create a vector of size n in c++

C++ vector size

#include <vector>

int main() {
  std::vector<int> myVector = { 666, 1337, 420 };
  
  size_t size = myVector.size(); // 3
  
  myVector.push_back(399); // Add 399 to the end of the vector
  
  size = myVector.size(); // 4
}

C++ initialize vector of vector with size

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

Create a vector of size n in c++

// create a vector with n integer elements
std::vector<int> arr(n);
// create a vector with n integer elements initalized at 0 
std::vector<int> vector1(n, 0);

Source: stackoverflow.com

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;

-1

Source: stackoverflow.com

Declare vector of size n in c++

#include <vector>

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

-1

Similar codes

2 votes306 views1 answer
Tribonacci series c++
C++
-2 votes312 views6 answers
C++ array
C++
0 vote281 views1 answer
Why do men drink liquor
C++
1 vote317 views1 answer
C++ isalphanum
C++
0 vote292 views1 answer
C++ program to find lcm of two numbers
C++
1 vote290 views3 answers
Right shift in c++
C++
13 votes286 views4 answers
Stl sort in c++
C++
2 votes293 views1 answer
C++ lambda thread example
C++
6 votes286 views2 answers
Min heap priority queue c++
C++
0 vote292 views1 answer
Create vectors of vectors c++
C++