C++ define vector with 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

C++ define vector with size

#include <vector>

auto n = 20
// create a vector with n=20 integer elements
std::vector<int> arr(n);

-1

Similar codes

0 vote281 views1 answer
C for loop decrement
C++
1 vote293 views1 answer
C++ evaluate expression
C++
0 vote328 views2 answers
Generating unique id for an object in c++
C++
-1 vote267 views1 answer
C++ to mips assembly converter
C++
0 vote297 views1 answer
How to generate number in c++
C++
-5 votes304 views1 answer
Convert char or string to int or double
C++
0 vote308 views2 answers
What is ++i and i++
C++
5 votes319 views6 answers
If arduino
C++
0 vote297 views2 answers
C++ uint8_t header
C++
0 vote305 views1 answer
Inheritance example in C plus plus
C++