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“c++ get length of array” Code Answer’s

c++ get length of array

cpp by Noq on Jan 18 2020 Donate Comment

int arr[5];
int len = sizeof(arr) / sizeof(arr[0]);
// returns 5

array length c++

cpp by Arrogant Anteater on Jul 14 2020 Donate Comment

#include <iostream>
using namespace std;

#define size(type) ((char *)(&type+1)-(char*)(&type))

int main(){
  int arr[5] = {1, 2, 3, 4, 5};
  cout << size(arr) / size(arr[0]) << endl; //returns 5
  //alternatively
  cout << sizeof(arr) / sizeof(int) << endl; //returns 5
}

find length of array c++

cpp by intricate_symbol

on Mar 08 2021 Donate Comment

#include <iostream>
using namespace std;
int main() {
   int arr[5] = {4, 1, 8, 2, 9};
   int len = sizeof(arr)/sizeof(arr[0]);
   cout << "The length of the array is: " << len;
   return 0;
}

length of array in cpp

cpp by Horrible Hare on May 25 2020 Donate Comment

int size = sizeof(arr)/sizeof(arr[0])

length of array c++

cpp by Sore Snail on Jul 22 2020 Donate Comment

// array::size
#include <iostream>
#include <array>

int main ()
{
  std::array<int,5> myints;
  std::cout << "size of myints: " << myints.size() << std::endl;
  std::cout << "sizeof(myints): " << sizeof(myints) << std::endl;

  return 0;
}

Source: www.cplusplus.com

how to get size of array c++

cpp by BreadCode

on May 31 2021 Donate Comment

How do I find the length of an array?
//Method 1:
- use sizeof(arr)/sizeof(*arr) 

//Method 2: 
- use std::array from  C++11
array <int,6> arr{1, 2, 3, 4, 5, 6}; 
cout << arr.size();

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