饱和脂肪烃一元取代物（C_nH_（2n＋1）Y）异构体总数的计算机求解方法

Computer-based solving process for the number of isomeres about monosubstitution (C_2H_(2n+1))of aliphatic hydrocarbon in the staturation

本文介绍了在微机上用ＰＡＳＣＡＬ语言计算饱和脂肪烃一元取代物的伯、仲、叔异构体数目及总数目的方法。为实现递归计算，突破无动态数组的编程障碍，程序使用查询计算方法，并采用ＰＡＳＣＡＬ语言文件系统存放中间数据和最后结果。计算数据准确可靠。

This paper introduces a method by which the number of the first. The second and the third isomeres and total number of isomeres about monosubstitutions (C2H2n+1Y) of aliphatic hydrocarbon in the saturation are computed with pascal language in the microcomputer. In order to realize recursive computation and break through programming trouble of absence of dynamic array in pascal. the computation method using query and the file system of pascal language are used in the program so that to store middle data and last results in it.The resulots of working out are accurate and reliable. They will give an accuracy of better than 36 bits.