How can I write an if statement which tells the program if the pointer is assigned or not?
WRONG example
if (*badpdr[0]==0);
How can I write an if statement which tells the program if the pointer
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How can I write an if statement which tells the program if the pointer is assigned or not?
WRONG example
if (*badpdr[0]==0);
You mean
if (badptr==NULL)?Note that you have to initially set your pointer to NULL when you define it or when you “unassign it” (e.g., you delete the object it refers to). Otherwise, it will contain junk and this test would fail because the value would not be a 0.
You can also do the comparison to 0 instead of NULL, there’s already enough arguments on SO which is the correct form so I won’t repeat them.