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 vote170 views1 answer
Types of Triangles Based on Angles in c++
C++
-1 vote193 views2 answers
Casting cpp
C++
3 votes191 views2 answers
Fast Inverse Square Root
C++
0 vote177 views1 answer
Kadane algo
C++
0 vote190 views1 answer
400 watt hour per kg
C++
1 vote195 views1 answer
C++ print byte as bit
C++
0 vote182 views2 answers
C++ memory leak
C++
2 votes189 views2 answers
C++ convert int to cstring
C++
1 vote185 views1 answer
C++ for loop multiple variables
C++
1 vote190 views1 answer
C++ nested switch statements
C++