Question

How to dynamically allocate array in C++

Answer 1

#include <iostream>
  
int main()
{
    int length = 10;
    int *arr = new int[length];
 
    for (int i = 0; i < length; i++) {
        *(arr + i) = (i + 1) * 2;
    }
    for (int i = 0; i < length; i++) {
        std::cout << arr[i] << " ";
    }
     
    delete[] arr;
     
    return 0;
}
  
   
   
/*
run:
   
2 4 6 8 10 12 14 16 18 20 
   
*/

 

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