how to find length of array in cpp code example
Example 1: c++ get length of array
int arr[5];
int len = sizeof(arr) / sizeof(arr[0]);
Example 2: 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;
}
Example 3: array length c++
#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;
}
Example 4: how to get size of array c++
How do I find the length of an array?
- use sizeof(arr)/sizeof(*arr)
- use std::array from C++11
array <int,6> arr{1, 2, 3, 4, 5, 6};
cout << arr.size();
Example 5: array length in c++
int a[20];
int length;
length = sizeof(a) / sizeof(int);