Find length of array c++

Array length c++

#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++

#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;
}

Array length c++

// 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: cplusplus.com

Length of array in cpp

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

How to get size of array c++

put in something

-4

Similar codes

0 vote201 views1 answer
Sort deque in c++
C++
-1 vote231 views1 answer
2927260.eps 2927262.jpg 2927263.ai License free.txt License premium.txt
C++
0 vote245 views1 answer
Fenwick tree
C++
0 vote235 views1 answer
Mkdir boost filesystem
C++
0 vote230 views1 answer
Lexene token pairs of java codes
C++
0 vote216 views1 answer
In every C++ program:
C++
1 vote220 views1 answer
Remove () not working c++
C++
1 vote222 views1 answer
Optimized Bubble Sort
C++
19 votes215 views1 answer
File objects in c++
C++
1 vote282 views2 answers
How to pause a c++ program.
C++