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 vote188 views1 answer
Makefile for single cpp file
C++
4 votes218 views3 answers
Clear screen in c++
C++
0 vote263 views2 answers
Lcm in c++
C++
5 votes179 views1 answer
Best clips recording software for cs go
C++
-1 vote226 views6 answers
C to c++ converter online
C++
0 vote261 views1 answer
Opengl draw house using glut c++
C++
0 vote188 views1 answer
Variabili in c++
C++
0 vote181 views1 answer
C++ set element at index
C++
1 vote178 views1 answer
Esp32 restart from code
C++
9 votes201 views2 answers
Delete last char of string C++
C++