为啥 if (operations[i] == "++X" || "X++")永真

为啥 if (operations[i] == "++X" || "X++")永真

改为 if (operations[i] == "++X" || operations[i] == "X++")
你把一个字符串自身作为条件进行判断，字符串转bool，不为空即为真