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 vote164 views1 answer
Get spaces in cin c++
C++
0 vote161 views1 answer
Compile c++ program
C++
0 vote168 views1 answer
Concatenate string along with the size of the word. in c++
C++
0 vote165 views1 answer
C++ little endian or big endian
C++
0 vote156 views1 answer
Character array to string c++ stl
C++
5 votes147 views1 answer
Exit() in c++
C++
5 votes150 views3 answers
Sql server convert utc to pst SQL command
C++
1 vote160 views1 answer
What are specialized classes c++
C++
0 vote158 views1 answer
What type is this c++
C++
0 vote168 views1 answer
C++ split string by comma
C++