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Question #161 Difficulty: 3

According to the C++17 standard, what is the output of this program? 

    #include <iostream>

int main() {
    int n = 3;
    int i = 0;

    switch (n % 2) {
    case 0: 
    do {
    ++i;
    case 1: ++i;
    } while (--n > 0);
    }

    std::cout << i;
}

Hint:

While the code can be difficult to understand, with the interleaved switch and do while constructs, try to step through the code line by line in your head, keeping track of the values of i and n.

Answer:

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