C++ create vector of size

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));

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 vote228 views1 answer
Ue4 int to enum c++
C++
1 vote222 views1 answer
Abs in c++
C++
0 vote244 views1 answer
C++ localtime unsafe
C++
1 vote231 views1 answer
Even and odd in c++
C++
0 vote204 views1 answer
Check .h files syntax c++
C++
11 votes216 views2 answers
C++ get ascii value of char
C++
0 vote212 views1 answer
C++ get index of map element
C++
0 vote223 views1 answer
C++ hello world linux
C++
0 vote224 views1 answer
C++ singleton prevent copy
C++
1 vote207 views1 answer
Dev c++ tahe last word error
C++