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// 请计算, int i = 1;
// i += --i && -5;
// i的结果是多少？
#include <stdio.h>
int main()
{
int i = 1;
i += --i && -5; // i = 1 + 0 && -5 = 1 + 0 = 1
// i = ((i + (--i)) && (-5));
printf("i = %d\n", i);
return 0;
}