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 vote131 views1 answer
How to input a vector when size is unknown
C++
0 vote148 views1 answer
C++ check if cin got the wrong type
C++
1 vote145 views1 answer
Area of a Circle in C++ Programming
C++
0 vote147 views1 answer
If argv == string
C++
1 vote132 views1 answer
C++ initialize array 1 to n
C++
5 votes151 views2 answers
Return multiple values c++
C++
0 vote141 views1 answer
C++ split string by comma
C++
0 vote163 views1 answer
Bfs sudocode
C++
0 vote140 views1 answer
Stack implementation through linked list
C++
0 vote121 views2 answers
See Compilation Time in c++ Program
C++