Introduction - If you have any usage issues, please Google them yourself
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