Declare 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++ 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

0 vote190 views1 answer
How to move your chrector in unity
C++
0 vote228 views4 answers
Online c++ to c converter
C++
0 vote186 views1 answer
Thread c++ member function
C++
0 vote184 views1 answer
Uint16_t in c++
C++
0 vote200 views1 answer
Xor in c++
C++
2 votes235 views1 answer
C++ virtual function in constructor
C++
0 vote189 views1 answer
System("pause") note working c++
C++
0 vote291 views2 answers
Ue4 c++ enum variable declaration
C++
19 votes247 views4 answers
How to get size of 2d vector in c++
C++
0 vote635 views1 answer
Cout c++
C++