我是第一次写程式，太难的语法完全不懂 用最笨的方法，写了LZW压缩 感觉逻辑都对为什麽印出那麽诡异的结果 请高手赐教 --------------------------------------- #include<stdio.h> #include<string.h> #include<stdlib.h> # define NUM 1000 //使用LZW压缩一段文章 输出s c output code string int main() { char diction[NUM][NUM],s[NUM],c; int i,j,u; FILE *p,*e; //p读取用,e写入 p=fopen("C:\\Documents and Settings\\dssdsd\\encode.txt","r"); e=fopen("C:\\Documents and Settings\\dssdsd\\encode.doc","w"); fprintf(e,"s\t\t\t\t\tc\toutput\tcode\tstring\n--------------------------------------\n"); //a到z for(j=0;j<=25;j++) diction[j][0]=j+97; j++; diction[j][0]=33; j++; diction[j][0]=39; j++; diction[j][0]=97; //以上建立a~z fscanf(p,"%c",&c); s[0]=c; while(fscanf(p,"%c",&c)!=EOF){ fprintf(e,"%s\t\t\t%c\n",s,c); j=0; while(strcmp(s ,diction[j] )!=0)//找出s在字典对应的code j++; u=j;//存入u i=0; while(s[i]!='\0') i++; s[i]=c;//s=s+c j=0; while(strcmp(s ,diction[j] )!=0){//搜寻s+c是否存在字典 j++;// if(diction[j][0]=='\0')break;//搜寻不到对应的字串跳出回圈 } if(strcmp(s ,diction[j] )==0){//存在字典 fprintf(e,"\n"); memset(s,'\0',sizeof(s)); s[0]=c;//s=c } else{//不存在字典 strcpy(diction[j],s);//加入字典 fprintf(e,"%d\t%d\t%s\n",u,j,s);//列印出output，code,string } } fclose(p); fclose(e); system("pause"); return 0; } s c output code string -------------------------------------- w w e 22 26 we we f 26 30 wef wef f 30 31 weff weff s 31 32 weffs weffs a 32 33 weffsa weffsa b 33 34 weffsab weffsab b 34 35 weffsabb weffsabb a 35 36 weffsabba weffsabba b 36 37 weffsabbab weffsabbab c 37 38 weffsabbabc weffsabbabc a 38 39 weffsabbabca weffsabbabca b 39 40 weffsabbabcab weffsabbabcab b 40 41 weffsabbabcabb weffsabbabcabb a 41 42 weffsabbabcabba --

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