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++ 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

1 vote188 views1 answer
String c++ if letter or number
C++
3 votes181 views1 answer
C++ string initialization
C++
0 vote242 views2 answers
C++ server service ros
C++
1 vote156 views1 answer
Whole size of the internet
C++
0 vote205 views1 answer
How to use jwt in login api in node js
C++
0 vote166 views1 answer
C++ cout colored output xcode
C++
0 vote171 views1 answer
C++ CHEAT SHEAT
C++
1 vote167 views1 answer
How to put bitset into a string in c++
C++
1 vote194 views1 answer
Como medir tiempo de ejecucion cpp
C++
2 votes164 views2 answers
Cpp split string by space
C++