Question

#include <iostream>

using namespace std;

int main()
{
    int i,j;
    int * k;
    char m;
    do{
        cin >> j;
        k = new int[j];
        for (i = 0; i < j; i++){
            k[i] = i;
            cout << k[i] << ", ";
        }

        delete[] k;

        cout << "\nContinue?\n";
        cin >> m;
    }while (m != 'n');
}

This is a program I made to describe my problem in understanding new and delete. Will ‘k’ produce memory leak?

Answer 1

This code is not exception safe – if an exception is thrown between new[] and delete[] the block pointed to is leaked. Use std::vector to resolve this problem.