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 vote228 views1 answer
Forward declaration c++
C++
0 vote250 views2 answers
Ue4 c++ replicate actor variable
C++
4 votes241 views2 answers
C++ inline if
C++
1 vote245 views1 answer
Qstring insert character
C++
-1 vote177 views1 answer
Dynamic 2d array c++
C++
0 vote252 views1 answer
Patrick and Shopping codeforces in c++
C++
8 votes234 views2 answers
Cpp print vector
C++
0 vote244 views1 answer
C++ count vector elements
C++
0 vote218 views1 answer
Square gcode
C++
1 vote209 views1 answer
Ue4 ftext c++
C++