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

5 votes237 views3 answers
Int to float c++
C++
0 vote247 views1 answer
Std::gcd
C++
1 vote269 views1 answer
Cpp malloc
C++
12 votes267 views4 answers
Random number cpp
C++
1 vote257 views1 answer
Rapidjson write stringbuffer to file
C++
0 vote251 views1 answer
Tutti i tipi di equazioni trigonometriche
C++
21 votes252 views6 answers
Convert char to string c++
C++
7 votes237 views4 answers
C++ hide console
C++
7 votes287 views2 answers
Round c++
C++
1 vote259 views2 answers
Cvtcolor rgb to gray
C++