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 vote108 views1 answer
Error: Microsoft Visual C++ 14.0 or greater is required. Get it with "Microsoft C++ Build Tools":
C++
0 vote111 views1 answer
How to refresh multiple command lines in C++ stream
C++
0 vote180 views1 answer
C++ basic snippet
C++
0 vote114 views1 answer
Comment installer boost c++ sur windows
C++
0 vote100 views1 answer
Get index by pointer to element of vector c++
C++
1 vote103 views1 answer
Ue4 bind function to button clicked c++
C++
0 vote109 views1 answer
RotateArray
C++
0 vote115 views3 answers
C++ loop maker
C++
0 vote102 views1 answer
Sfml keyboard events cpp
C++
2 votes67 views3 answers
Selection sort cpp
C++