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how to find the length of an array in cpp

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Defiant Dog answered on January 18, 2020 Popularity 10/10 Helpfulness 3/10

answer how to find the length of an array in cpp

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how to find the length of an array in cpp

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// you can divide the size of an array 
// by the size of each element (in bytes)
int len = sizeof(arr) / sizeof(arr[0]);

Popularity 10/10 Helpfulness 3/10 Language cpp

Source: Grepper

Tags: c++ find

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Contributed on May 24 2022

Defiant Dog

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c++ get length of array

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

Popularity 10/10 Helpfulness 8/10 Language cpp

Source: Grepper

Tags: c++

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Contributed on Jan 18 2020

Noq

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find length of array c++

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#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;
}

Popularity 10/10 Helpfulness 5/10 Language cpp

Source: Grepper

Tags: c++

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Contributed on Mar 08 2021

intricate_symbol

0 Answers Avg Quality 2/10

array length c++

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#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
}

Popularity 10/10 Helpfulness 5/10 Language cpp

Source: Grepper

Tags: c++

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Contributed on Jul 14 2020

Arrogant Anteater

0 Answers Avg Quality 2/10

array length c++

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// 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;
}

Popularity 10/10 Helpfulness 3/10 Language cpp

Source: www.cplusplus.com

Tags: c++

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Contributed on May 07 2020

Spotless Spider

0 Answers Avg Quality 2/10

how to find the length of an array in cpp

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