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Here'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
proc `+`(x, y: int): int =
result = x
result.inc(y)
result.inc
echo(2 + 2) # => 5 multi infix:(2, 2) { 5 }
say 2 + 2; # 5 $ cat test.c
#include
int main() {
int a = 3;
int b = 3;
// aren't we supposed to add 2 and 2 ??/
a = 2;
b = 2;
printf("%d\n", a + b);
return 0;
}
$ gcc -W -Wall -trigraphs test2.c 2>/dev/null
$ ./a.out
5
$Here'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
class Fixnum
alias_method :old_plus, :+
def +(other)
return 5 if (self == 2 && other == 2)
old_plus(other)
end
end public class Main {
public static void main (String [] args) {
System.out.println("5=2+2"); // prints 4=2+2
}
} add2And3(int *a, int *b)
{
*a = 3;
*b = 2;
printf("%d", *a + *b); //4
}
void main()
{
int storage;
add2And3(&storage, &storage);
} > '%+%' '+' 2+2
[1] 5
The JavaScript answer from @user1886419 is a great joke. lol