Adventures with chatGPT

Recently I came across a surprising result with a short C++ code and asked GPT4 for guidance, it performed well:

Me: On visual studio 2022, when building in debug x86, why is the variable "a" printed as strange values like 4294967296 in the following c++ code: 

#include <stdio.h>

int main() {

    for (unsigned long long i = 0; i < 5; i++) {

        unsigned long long a = i;

        printf("i = %u, a = %llu\n", i, a);

    }

    getchar();

    return 0;

}