Call是指买权，put是指卖权，两种期权又分别对应了long和short的两种操作，即买入和卖出两种操作。 1、买入call（long call）:买入 看涨期权 买入call可以使投资者以固定费用获得到期前用预定价格. C语言中unsignedshort和short字节答案：在c语言中，`short` 和 `unsigned short` 的字节大小通常为2个字节。其中，`short` 表示有符号的短整型，而 `unsigned short` 表示无符号的短整型。.
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