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size of array

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Nervous Newt answered on May 25, 2020 Popularity 9/10 Helpfulness 1/10

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size of array

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-1

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

Popularity 9/10 Helpfulness 1/10 Language cpp

Source: Grepper

Tags: c++ size

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Contributed on Feb 03 2023

Nervous Newt

0 Answers Avg Quality 2/10

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size of array

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#include <bits/stdc++.h>
using namespace std;     
int main()
{
    int arr[] = {1, 2, 3, 4, 5};
    int n = sizeof(arr)/sizeof(arr[0]);
    return 0;
}

Popularity 10/10 Helpfulness 4/10 Language cpp

Source: www.geeksforgeeks.org

Tags: c++

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Contributed on Jan 24 2022

Rich Rattlesnake

0 Answers Avg Quality 2/10

javascript size array

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let array = [1, 2, 3];
console.log(array.length);

Popularity 10/10 Helpfulness 4/10 Language javascript

Source: Grepper

Tags: javascript j

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Contributed on May 25 2020

Glamorous Gibbon

0 Answers Avg Quality 2/10

javascript sizeof array

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array_name.length;

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Source: careerkarma.com

Tags: javascript j

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Contributed on Jan 19 2022

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length of array

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int a[20];
int length;
length = sizeof(a) / sizeof(int);

Popularity 10/10 Helpfulness 2/10 Language c

Source: Grepper

Tags: c

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Contributed on Oct 08 2022

Asmaa Ghanem

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size of array

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int array[] = {4,78,3,7,9,2,56,2,76,23,6,2,1,645};
std::size_t length = sizeof(array)/sizeof(int); // see solution 1

Popularity 9/10 Helpfulness 2/10 Language cpp

Source: www.codeproject.com

Tags: c++

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Contributed on Jun 11 2022

Fancy Flatworm

0 Answers Avg Quality 2/10

get array size

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// C++ program to find size 
// of an array by using a 
// pointer hack
#include <bits/stdc++.h>
using namespace std;
  
int main()
{
    int arr[] = { 1, 2, 3, 4, 5, 6 };
    int size = *(&arr + 1) - arr;
    cout << "Number of elements in arr[] is " << size;
    return 0;
}

Popularity 9/10 Helpfulness 1/10 Language cpp

Source: www.geeksforgeeks.org

Tags: c++

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Contributed on Jul 15 2022

Mosopefoluwa Adebawojo

0 Answers Avg Quality 2/10

size of array

Comment

If all you have is the pointer to the first element then you can't:

int array[6]= { 1, 2, 3, 4, 5, 6 };
void main() 
  {
  int *parray = &(array[0]);
  int len=sizeof(array)/sizeof(int);
  printf("Length Of Array=%d\n", len);
  len = sizeof(parray);
  printf("Length Of Array=%d\n", len);
  getch();
}
// output: Will give two different values: 6, and 4.

Popularity 9/10 Helpfulness 1/10 Language cpp

Source: www.codeproject.com

Tags: c++

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Contributed on Jun 11 2022

Fancy Flatworm

0 Answers Avg Quality 2/10

size of array

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#include <stdio.h>
#include <stdlib.h>

void printSizeOf(int intArray[]);
void printLength(int intArray[]);

int main(int argc, char* argv[])
{
    int array[] = { 0, 1, 2, 3, 4, 5, 6 };

    printf("sizeof of array: %d\n", (int) sizeof(array));
    printSizeOf(array);

    printf("Length of array: %d\n", (int)( sizeof(array) / sizeof(array[0]) ));
    printLength(array);
}

void printSizeOf(int intArray[])
{
    printf("sizeof of parameter: %d\n", (int) sizeof(intArray));
}

void printLength(int intArray[])
{
    printf("Length of parameter: %d\n", (int)( sizeof(intArray) / sizeof(intArray[0]) ));
}

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Source: stackoverflow.com

Tags: size

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Contributed on Sep 23 2021

Modern Millipede

0 Answers Avg Quality 2/10

size of array

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// Alternately, use the containers from the STL, e. g. std::array or std::vector. 
// These containers behave very similar to standard arrays, but you can query their 
// size at runtime, no problem.


std::vector<int> array;
array.pushback(2);
array.pushback(7);
array.pushback(344);
array.pushback(45);
array.pushback(89);
array.pushback(28);
std::size_t length = array.size(); // easy!

Popularity 9/10 Helpfulness 1/10 Language cpp

Source: www.codeproject.com

Tags: c++

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Contributed on Jun 11 2022

Fancy Flatworm

0 Answers Avg Quality 2/10

size of array

Comment

// If you have s statically allocated array, you can determine the number of elements
//from the arrays name. However, if that is the case, and you don't use C++ functionality,
//then most likely there wouldn't be a need for this in the first place.

int array[10];
std::size_t length = 10; // big surprise, that number is right in the definition!

Popularity 9/10 Helpfulness 1/10 Language cpp

Source: www.codeproject.com

Tags: c++

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Contributed on Jun 11 2022

Fancy Flatworm

0 Answers Avg Quality 2/10

size of array

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