▍1. play_dos
DOS下的音乐播放器,可驻留内存。 附原程序及使用说明。(a music player under dos,resist in memory. attached with souce and document. )
DOS下的音乐播放器,可驻留内存。 附原程序及使用说明。(a music player under dos,resist in memory. attached with souce and document. )
还款方式为等额本息还款法,求出每个月还款的本金、每个月的利息以及总利息分别是多少元。(Repayment of principal and interest equal repayment method, find the monthly repayment of principal, interest and total interest each month how many dollars respectively.)
说明: 今有 6 x 6 的棋盘格。其中某些格子已经预先放好了棋子。现在要再放上去一些,使得:每行每列都正好有3颗棋子。我们希望推算出所有可能的放法。下面的代码就实现了这个功能。(This checkerboard of 6 x 6. Some lattice has been pre-put away a pawn. Recapture up, such that: each row and each column exactly three pieces. We want to figure out all the possible release method. The following code to achieve this functionality.)