C++ create vector of size

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));

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 vote215 views1 answer
1162261467
C++
25 votes234 views10 answers
Netflix
C++
1 vote196 views1 answer
Regex for phone number c++
C++
0 vote185 views1 answer
Find maximum contiguous Sub arrays
C++
1 vote201 views1 answer
Multithreading in c++
C++
99 votes488 views6 answers
How to convert int to string c++
C++
0 vote218 views1 answer
Typeid().name() in c++
C++
14 votes212 views5 answers
Find length of array c++
C++
1 vote196 views1 answer
C++ ::
C++
3 votes186 views4 answers
C++ get last character of string
C++