Create a 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++ initialize vector of vector with size

vector<vector<int>> v(10, vector<int>(10));

Create a vector of size n in c++

// create a vector with n integer elements
std::vector<int> arr(n);
// create a vector with n integer elements initalized at 0 
std::vector<int> vector1(n, 0);

Source: stackoverflow.com

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

2 votes268 views2 answers
Qt qstring to float
C++
17 votes250 views1 answer
Input a string in c++
C++
0 vote264 views1 answer
Json::iterator c++
C++
0 vote260 views1 answer
Create a bitset of 1024 bits,
C++
1 vote259 views1 answer
GetCurrentThreadId c
C++
0 vote262 views1 answer
How to format decimal palces in c++
C++
0 vote248 views1 answer
List in c++
C++
8 votes246 views3 answers
Sum elements in vector c++
C++
0 vote249 views1 answer
C++ caps lock key
C++
0 vote261 views1 answer
Convert vector into array c++
C++