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Recently I encountered this puzzle :
int main(){
int arr[7];
int b,c,d,a;
a=4;
printf("%d",arr[?]);
return 0;
}
The question is to Replace "?" with a integer so that output is 4. I am not sure but I don't think this is solvable in a standard way ?! (Not invoking Undefined Behavior or depending on implementation) If NO, then I am very interested in knowing how ?
Edit:This task is taken from here, I tried to solve with 10, but sadly it's not the answer the problem setter wants.However, I solved it using some pretested implementation dependent mumbo-jumbo,but I really have no explanation for how it really works!
Here is the answer : SPOILER,You are welcome to explain it
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When we recently wrote about the toughest math problems that have been solved, we mentioned one of the greatest achievements in 20th-century math: the solution to Fermat's Last Theorem. Sir Andrew Wiles solved it using Elliptic Curves.
Google Lens can solve simple equations such as “5+2” or more complex formulas such as “x2 – 3x + 2.” You can scan the problem from a real-world piece of paper or from a digital display. Open the “Google” app on your Android phone or tablet, iPhone, or iPad.
Math alone cannot solve deeply-rooted societal problems, and attempting to rely on it will only reinforce inequalities that already exist in the system.
In most implementations, arr[10] (or 7) will be 4, since the locals will be laid out sequentially.
However, this is neither defined nor standard, and must not be relied on.
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