东软实训《电子地图管理系统》代码.docx

1、东软实训电子地图管理系统代码#include #include #include #include #define MCGETCHAR(date)(*(char *)(date)#define MCGETSHORT(date)(unsigned short)(unsigned short)(*(char*)(date)8)|(unsigned short)(*(char*)(date)+1)&0x00ff)#define MCGETLONG(date)(unsigned long)MCGETSHORT(date)16)|(unsigned long)MCGETSHORT(char*)(date

2、)+2)&0x0000ffff)#define MCGET3BN(date)(unsigned long )MCGETCHAR(date)16)|(unsigned long)MCGETSHORT(char*)(date+1)&0x0000ffff) #define Length 65535int Sizecount=2;int Mark_1=0,Mark_2=0;int ReadFile();/读取文件void Qsort(int l,int r);/排序int Binsearch(int s,int t,int key);/二分查找int Search();/检索void Update()

3、;/更新struct RoadRecord short ussize; long ulLinkID; short usRoadnamesize; int usDispclass; int usBrunch; int usRoadnameflag; char Roadname20;struct RoadRecord roadLength;struct Datestore/定义结构体存储数据 int n; char Totalsize4; char LinkID_15; char Roadnamesize2 ; char Road_flag2; char Roadname20; ;static s

4、truct Datestore DsLength;struct dateout long LinkID; int Dispclass; int Brunch; int Roadnameflag; char Roadname20;struct dateout dateLength;int ReadFile()/模块一读取文件 int m; char filename50; unsigned short ustotalsize; unsigned long ulLinkID; unsigned short usRoadnamesize; FILE *fp_1=fopen(D:GTBL.dat,rb

5、+); FILE *fp_2=fopen(D:Newout.txt,w+); if(fp_1=NULL)/文件不存在手动输入文件路径 printf(nt无法打开文件“GTBL.dat” 或文件不再D盘根目录下nn请手动输入文件路径（路径中请勿有中文）：); scanf(%s,filename); if ( (fp_1=fopen(filename,rb+)=NULL) printf(nt无法打开文件“GTBL.dat” 或文件不存在!nn); return 0; else printf(nt文件打开成功!nn); if(fp_2=NULL) printf(nt无法打开文件“newout.txt

6、”或文件不存在!nn); return 0; printf(nt文件读取中.n); while(fread(DsSizecount.Totalsize ,2, 1, fp_1) = 1) fread( DsSizecount.LinkID_1 , 4, 1, fp_1 ) ;/读取LinkID字符 fread( DsSizecount.Roadnamesize ,2, 1, fp_1 ) ; /读取Roadnamesize字符串 fread( DsSizecount.Road_flag, 4, 1 , fp_1 ) ; ustotalsize = MCGETSHORT(DsSizecount.

7、Totalsize) ; /调用宏函数将字符串信息转化为数值类型 ulLinkID = MCGETLONG(DsSizecount.LinkID_1) ; usRoadnamesize = MCGETSHORT(DsSizecount.Roadnamesize);/赋值将数值信息传到结构体中 DsSizecount.n=ustotalsize-12; roadSizecount.ussize=ustotalsize; roadSizecount.ulLinkID=ulLinkID; roadSizecount.usRoadnamesize=usRoadnamesize; m=(int)DsSi

8、zecount.Road_flag3&255; roadSizecount.usDispclass=m&15; roadSizecount.usBrunch=(m&112)/16; roadSizecount.usRoadnameflag=(m&128)/128; dateSizecount.Dispclass=roadSizecount.usDispclass; dateSizecount.Brunch=roadSizecount.usBrunch; dateSizecount.Roadnameflag=roadSizecount.usRoadnameflag; dateSizecount.

9、LinkID=ulLinkID; fread( DsSizecount.Roadname , sizeof(char) , ustotalsize-12 , fp_1 ) ;/从文件中读取道路名称 strcpy(dateSizecount.Roadname,DsSizecount.Roadname+4); fprintf(fp_2,LinkID=); fprintf(fp_2,%dt,dateSizecount.LinkID); fprintf(fp_2,Flag=); fprintf(fp_2,%dt,dateSizecount.Roadnameflag); fprintf(fp_2,Bru

10、nch); fprintf(fp_2,%dt,dateSizecount.Brunch); fprintf(fp_2,Dispclass=); fprintf(fp_2,%dt,dateSizecount.Dispclass); fprintf(fp_2,Roadname=); fprintf(fp_2,%st,dateSizecount.Roadname); fprintf(fp_2,n); Sizecount+; fclose(fp_1); fclose(fp_2); printf(nt文件读取成功nn 生成文件nn); return 1;void Qsort(int l,int r)/模

11、块二排序(快速排序) int n=datel.LinkID,i=l,j=r; dateLength-2=datel; DsLength-2=Dsl; if(l=r) return ; while(ij) while(i=n) -j; datei=datej; Dsi=Dsj; while(ij & datei.LinkID=n) +i; datej=datei; Dsj=Dsi; datei=dateLength-2; Dsi=DsLength-2; Qsort(l,i-1); Qsort(i+1,r);int Binsearch(int s,int t,int key)/二分查找 int l

12、ow=s,high=t,mid; if(skey) return Binsearch(low,mid-1,key); else return Binsearch(mid+1,high,key); return -1;int Search()/模块三检索 int sel,i,flag=0,n,key,mid,s=2,t=Sizecount; char Roadname20; FILE *p,*p1,*p2;/分别保存不同的道路检索信息 printf(n请输入检索方式：nt1：指定LinkID检索nt2：指定交叉Link列表示Class番号检索nt3：指定查找岔路数检索nt4：指定道路名称检索nt

13、0：返回n请选择：); while(scanf(%d,&sel)!=1)/判断输入的数据是否为数字 fflush(stdin); printf(nt输入错误，请重新输入!n); printf(n请输入检索方式：nt1：指定LinkID检索nt2：指定交叉Link列表示Class番号检索nt3：指定查找岔路数检索nt4：指定道路名称检索nt0：返回n请选择：); switch(sel) case 1:/LinkID检索 printf(请输入LinkID:); scanf(%d,&n); key=n; mid=Binsearch(s,t,key); if(mid!=-1) printf(nt检索到的信息不足5条，信息将显示在屏幕上!