Declare vector of size n in c++

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

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 vote99 views3 answers
Comment in c++
C++
3 votes96 views2 answers
C++ vector element search
C++
0 vote118 views1 answer
How to know datatype of something in c++
C++
0 vote105 views1 answer
Compare two functions in a class c++
C++
0 vote164 views1 answer
Primtiive calculator in c++
C++
7 votes98 views2 answers
Round function in c++
C++
0 vote191 views1 answer
& in xml
C++
19 votes89 views1 answer
File objects in c++
C++
9 votes84 views1 answer
C++ code to print hello world
C++
4 votes92 views6 answers
For loop c++
C++