C++ quiz. After calling the default constructor, sizeof and

After calling the default constructor, sizeof and increment operator, what will be printed out to the console?

#include <iostream>
using namespace std;

int main()
{
    int a = int();
    int c = sizeof(++a);
    c = a++;
    cout << с << endl;
}

1
2
Runtime error
Compilation error
0

Explanation

1. int a = int();
default value is assigned - 0
2. int c = sizeof(++a);
The sizeof operator yields the number of bytes in the object representation of its operand. The operand is either an expression, which is not evaluated, or a parenthesized type-id ... The expression of the operand is not evaluated. Therefore, the increment operation will not be performed
3. c = a++;
the assignment is performed first and then the increment operation

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