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

1 vote327 views1 answer
What is the associative property of an operator
C++
0 vote290 views1 answer
Sort deque in c++
C++
0 vote381 views1 answer
Make an x using asterisk c++
C++
10 votes335 views3 answers
Remove last character from string c++
C++
2 votes287 views1 answer
Java print f int
C++
2 votes357 views2 answers
Qt disable resizing window
C++
0 vote298 views1 answer
Count spaces in string java
C++
1 vote336 views1 answer
String input with space c++ stl
C++
1 vote304 views1 answer
Abs in c++
C++
102 votes483 views6 answers
Convert integer to string in c++
C++