Answer by M.M for Can (a==1)&&(a==2)&&(a==3) evaluate to true? (and can it be...
Other things not mentioned yet (source):a might have overloaded operator int(), the operator for implicit conversion to int (instead of operator== as covered by other answers).a might be a preprocessor...
View ArticleAnswer by Stanislav for Can (a==1)&&(a==2)&&(a==3) evaluate to true? (and can...
As it was noticed before, this trick could be performed with volatile. This is more honest approach compared to operator changing. Just let us use two threads:volatile int a;void changingValue(){...
View ArticleAnswer by mathreadler for Can (a==1)&&(a==2)&&(a==3) evaluate to true? (and...
Just to show my own ideas. I was thinking of some data structure like a stream buffer or a ring buffer.We can with template inheritance "hide away the operator" and nothing will be altered in the data...
View ArticleAnswer by besc for Can (a==1)&&(a==2)&&(a==3) evaluate to true? (and can it...
I assume a requirement is a valid program free of undefined behaviour. Otherwise simply introduce something like a data race and wait for the right circumstances to occur.In a nutshell: Yes, it is...
View ArticleAnswer by Christian Hackl for Can (a==1)&&(a==2)&&(a==3) evaluate to true?...
Operator overloading and macros are trivial solutions to such a riddle.And if so, can it actually be useful?Well, with some imagination... One possible use case I can think of are unit tests or...
View ArticleAnswer by super for Can (a==1)&&(a==2)&&(a==3) evaluate to true? (and can it...
Could be somewhat useful.#include <iostream>#include <algorithm>#include <vector>using namespace std;struct Foo { std::vector<int> v = {1,2,3};};bool operator==(const Foo&...
View ArticleAnswer by Edgar Rokjān for Can (a==1)&&(a==2)&&(a==3) evaluate to true? (and...
Can the expression evaluate to true in C++?Yes, nothing is impossible...struct A { int x = 0;};bool operator==(A& a, int num) { return ++a.x == num;}Then:if ((a == 1) && (a == 2) &&...
View ArticleAnswer by Hatted Rooster for Can (a==1)&&(a==2)&&(a==3) evaluate to true?...
Yes it can:class Foo{ public: bool operator==(int a) { return true; }};Then, let a be of type Foo and voila.Can this actually be useful? I don't really see it being useful no.
View ArticleCan (a==1)&&(a==2)&&(a==3) evaluate to true? (and can it be useful?)
Inspired by another question regarding java-script language. Can the expression (a==1)&&(a==2)&&(a==3)evaluate to true in C++? (And if so, can it actually be useful?)
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