用于计算股票交易的收益和损失和处理的小吨。

代码说明：

用来计算股票买卖盈亏及手续费的小工具，包含买保本价、卖保本加、买卖差价、交易费用，盈亏等，使用命令参数有2种如下： 1、perl stock.pl 股票数量 股票价格 例如：perl stock.pl 500 13.00 2、perl stock.pl 股票数量 股票买入价格 股票卖出价格 -Used to calculate gains and losses on stock transactions and handling of small tools, including the price of insurance to buy and sell capital preservation increases, bid-ask spread, transaction costs, profit and loss, etc., the use of two kinds of command parameters are as follows: 1, perl stock.pl amount of shares such as stock prices : perl stock.pl 500 13.002, perl stock.pl amount of shares of stock prices to buy shares on the stock market price