Write a program that makes 2 + 2 = 5
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Write a program that makes 2 + 2 = 5
1–10 of 76 posts
Re: Write a program that makes 2 + 2 = 5
#2JavaScript ;)
Re: Write a program that makes 2 + 2 = 5
#3The JavaScript answer from @user1886419 is a great joke. lol
Re: Write a program that makes 2 + 2 = 5
#4Julia
!(a::Int) = !bool(a)
!0 + 2 + 2
##> 5Re: Write a program that makes 2 + 2 = 5
#5You know, this would be possible in C and C++ if you add some code at the start of main() that unprotects the executable section, goes through it and modifies each "load 4 in register X" instruction to "load 5", then forks a process that attaches itself as a debugger to the executable to monitor every add and change the result to 5 if it's 4.
Re: Write a program that makes 2 + 2 = 5
#6That Java one is particularly amusing, as most programmers otherwise familiar with the language would never know about the integer cache (and their reaction upon discovering that there is one would probably be the same as mine - WTF?)
Edit: I had a feeling I'd heard of an "integer cache" somewhere else" in a WTF-eliciting context... http://thedailywtf.com/Articles/The-Integer-Cache.aspx !
Re: Write a program that makes 2 + 2 = 5
#7That Java one is particularly amusing, as most programmers otherwise familiar with the language would never know about the integer cache (and their reaction upon discovering that there is one would probably be the same as mine - WTF? ) Edit: I had a feeling I'd heard of an "integer cache" somewhere else" in a WTF-eliciting context... http://thedailywtf.com/Articles/The-Integer-Cache.aspx !
The integer cache is well known for over 10 years, presently there is a JVM knob to make it larger: java.lang.Integer.IntegerCache.high So the solution is not surprising at all.
Personally I'd just employ an enhancing classload and replace some of bytecodes ICONST_2 with ICONST_3. (one byte change in the bytecode). Yet, overall uninteresting question.
Re: Write a program that makes 2 + 2 = 5
#8That Java one is particularly amusing, as most programmers otherwise familiar with the language would never know about the integer cache (and their reaction upon discovering that there is one would probably be the same as mine - WTF? ) Edit: I had a feeling I'd heard of an "integer cache" somewhere else" in a WTF-eliciting context... http://thedailywtf.com/Articles/The-Integer-Cache.aspx !
Re: Write a program that makes 2 + 2 = 5
#9I would like to post on there but it's protected from people with low reputation... Maybe someone here appreciates my solution in C:
#include
int main(int argc, char* argv[]){
int arr[1];
int a = 2;
int b = 2;
arr[1] = 3;
printf("%d", a+b);
return 0;
}
Re: Write a program that makes 2 + 2 = 5
#10Here's a Ruby solution that really does modify the + operation:
class Fixnum
alias_method :old_plus, :+
def +(*args)
old_plus(*args).old_plus(1)
end
end
2 + 2 #=> 5