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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

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

array length c++

cpp by Arrogant Anteater on Jul 14 2020 Donate

#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
}

length of array in cpp

cpp by Horrible Hare on May 25 2020 Donate