get the length of an array c++ code example
Example 1: c++ get length of array
int arr[5];
int len = sizeof(arr) / sizeof(arr[0]);
Example 2: length of array in cpp
int size = sizeof(arr)/sizeof(arr[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: length of array c++
#include <iostream>
using namespace std;
int main() {
int arr[5] = {4, 1, 8, 2, 9};
int len = sizeof(arr);
cout << "The length of the array is: " << len;
return 0;
}
Example 5: length of each number in array in c++
const int SIZE = 9;
int arr[SIZE], arr2[SIZE];
cout << "Enter numbers: \n";
for (int i = 0; i < SIZE; i++)
cin >> arr[i];
for (int i = 0; i < SIZE; i++)
cout << arr[i] << "\t";
cout << endl;
int count, number;
for (int i = 0; i < SIZE; i++)
{
count = 0;
number = arr[i];
do
{
++count;
number /= 10;
} while (number);
arr2[i] = count;
}
for (int i = 0; i < SIZE; i++)
cout << arr2[i] << "\t";
cout << endl;