How this code answer is true??

Question

Here both pointer is pointing different string and how if condition is true??

#include<stdio.h>
Main()
{
Char *p="abc",*q="abc";
If(p==q)
Printf("same");
Else
Printf("not same");
}

Answer 1

As Ipang already said, you can not rely on this behaviour because it is an optimization technique applied by the compiler that is not demanded by the language standard. Have a look at the following thread:

https://stackoverflow.com/questions/690176/c-c-optimization-of-pointers-to-string-constants

Answer 2

In SoloLearn this outputs "same", but in my phone it outputs "not same" (using C4Droid). Personally, I wouldn't count on or expect certainty from this code, seeing how output differs by compiler.