C语言课程设计（论文）-销售管理系统.doc

摘要I销售管理系统摘要在销售管理当中，人工统计的速度慢，且容易出现差错。本销售管理系统的自动化加速了统计工作，提高管理效率。本程序主要采用对零散的纸条进行自动读取，然后按组分类将数据保存到数组，这样的结构化非常便于程序后续的统计工作。统计具体过程涉及到个人销量排序与产品销量排序等问题，将于正文中详细介绍。本程序实现了所有设计要求。关键词：文件，排序，统计C语言课程设计论文II目录中文摘要··················································································1题目要求··································································································11.1要求.12需求分析··································································································13总体设计··································································································14详细设计·································································································24.1主函数·······························································································24.2各功能模块设计···················································································54.3公共函数···························································································65运行结果（附带抓图）··············································································76总结······································································································10参考文献····································································································27C语言课程设计论文-1-1题目要求11要求某公司有四个销售员（编号：1-4），负责销售五种产品（编号：1-5）。每个销售员都将当日出售的每种产品各写一张便条交上来。每张便条内容包含：1、销售员的代号2、产品的代号3、这种产品当天的销售额每位销售员每天可能上缴0-5张便条。假设手机到了上个月的所有便条，编写一个处理系统，读取上月的销售情况（自己设定），进行如下处理：1、计算上个月没人每种产品的销售额2、按销售额对销售员进行排序，输出排序结果（销售员代号）3、统计每种产品的总销售额，对这些产品从高到低的顺序输出结果（须输出产品的代号和销售额）4、输出统计报表2需求分析本程序将用到文件系统，list.txt文件内容作为数据源，其中单行内容代表一张纸条。程序运行后首先将文件系统的原始数据读取并保存到程序的结构体数组当中，所以应提供文件输入的操作；由于纸条数据零散，所以要对原始数据进行分类操作并提供一个数组用于保存分类信息；在程序中要进行统计工作，所以要提供显示、排序等操作；另外应提供键盘式选择菜单实现功能选择。3总体设计根据上面的分析，可以将这个系统分为如下五大模块：查看每人每种产品的销售额、按销售额对销售员排序、对每种产品总销售额从高到低排序、输出统计报表和退出。其中主要模块是前四个模块。4详细设计4.1主函数【数据结构】原始数据有员工代号、产品代号和销售额，所以定义一个全局结构体数组scrip用于保存原始C语言课程设计论文-2-数据。然后定义全局变量n保存纸条数目，定义数组s用于保存分类后的信息。【数据结构代码】typedefstruct/*缩短结构体变量名*/intshangpinZ；/*定义结构体便于信息的存储和读写，辨别*/*R是表示商品的种类,最后一个为该销售员商品总和*/data；【程序】intmain()inti,choice；datasxyR；/*R表示职工的个数，前面的宏常量*/for(i=0；i+)system("cls")；/*清频命令*/menu()；/*菜单函数提示用户怎样选择*/printf("你想做什么?n")；printf("请选择:")；/*输入要进行的操作*/scanf("%d",&choice)；if(choice=0)/*退出程序*/break；elseswitch(choice)case1:data_count(sxy)；break；/*计算上个月每个人每种产品的销售额*/case2:range_sxy(sxy)；break；/*按销售额对销售员进行排序，输出排序结果*/case3:range_shangpin(sxy)；break；/*统计每种产品的总销售额,输出排序结果*/case4:data_out(sxy)；break；/*输出统计报表*/4.1.1data_read()读取文件数据data_read（）函数从1.txt文件读取数据，将数据保存到程序的结构体当中。【程序】voiddata_read(data*x)/*读入函数使程序简洁*/FILE*fp；charfname10；inti；printf("您想查询哪个月?n")；printf("请输入月份:")；/*输入文件名,这样可以进行各个月份信息读入*/scanf("%s",fname)；strcat(fname,".txt")；/*连接文件属性*/if(fp=fopen(fname,"rb")=NULL)/*打开文件*/