Delete a pointer or set him as NULL?

[robgeek]

Good evening!

So, i have this class which i set as attribute a pointer of an object from another class. Something like:

class Test
{
public:
    RobGeek *obj;
    //...other attributes and code here.
};

Test( )
{
    //code here in the constructor
    obj = new RobGeek;
    if(//i check if an attribute of "obj" is setted properly)
    {//code here}
    else
    {
        obj = NULL;
        //or
        delete obj;
        //try other constructor of RobGeek 

That is the idea. I try to create this object and check if he is ok, if not i try the other way, but i don't know the difference between "delete obj;" and "obj = NULL;"

Thanks!

[TarikNeaj]

Keep this as a rule of thumb. For every new there should be one delete. So you very much want to delete that.

Recently in a video i encountered, the person in question said that it is good programming practice to also do obj = nullptr; // note: nullptr not NULL after deleting. Ive read some stuff and its more like "it doesnt hurt". You can read move about it somewhere here, pick your poison.

https://www.google.se/?gfe_rd=cr&ei=AWAoVcaiG6iF8QeDvYHoAQ#q=c%2B%2B+set+pointer+to+null+after+delete