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

0 vote303 views1 answer
Initialize a vector with another vector c++ complexity
C++
4 votes351 views2 answers
Double max value c++
C++
28 votes317 views5 answers
Flutter date format
C++
-1 vote277 views1 answer
How to insert all values from one vector to another
C++
105 votes455 views6 answers
C++ int to string
C++
2 votes338 views2 answers
C++ while true loop
C++
0 vote309 views1 answer
C++ convert int to double
C++
0 vote315 views1 answer
Find the max element along with it's index in c++
C++
0 vote305 views1 answer
C++ conditional typedef
C++
8 votes323 views10 answers
Print
C++