How to create a memory leak in C++?

Question

I was just wondering how you could create a system memory leak using C++. I have done some googling on this but not much came up, I am aware that it is not really feasible t

Answer 1

#include 

void main(){

for(int i = 0; i < 1000; i++)

double* ptr = (double*)malloc(1000000*sizeof(double))

//free(ptr);

ptr = NULL;

}

note : the hashed line of code caused a memory leak while the process allocated it and did't return it back to the OS