詢問問題1

/* test1.cpp */

#include <iostream>
#include <cstdio>

using namespace std;

int main(int argc, char *argv[]) {
    int x = 0;
    if (x = 0 || x == 0) {
        printf("#1 %d\n", x);
    }
    printf("#2 %d\n", x);
    return 0;
}