为什么小弟我的这个字典没法初始化

为什么我的这个字典没法初始化
这是一个LZW算法

C/C++ code

#define DIC_SIZE    1125#define TRUE        1#define FALSE       0#define END         NULL#include <stdio.h>#include <string.h>#include <stdlib.h>typedef struct dictionary{    char *character;    int code;}DIC;DIC string_tab[DIC_SIZE];int count=0;DIC *isFindDic(char *buffer);DIC *findInDic(char *prefix);char *toString(char c);//初始化字典函数void initDic(){    int i;    char ch=1;        for(i=0;i<255;i++){        //sprintf(&ch,"%c",i+1);        string_tab[i].character=toString(i+1);        string_tab[i].code=i+1;        //printf("%s ",string_tab[i].character);        //printf("%d\n",string_tab[i].code);        count++;    }    string_tab[i+1].character=END;}/*字符转换为字符串  * */char *toString(char c){    char buffStr[10];        buffStr[0]=c;    buffStr[1]='\0';        return buffStr;}//压缩函数 void compression(char inFileName[20],char outFileName[20]){    //char *prefix,*suffix;    FILE *inFile,*outFile;    char *buffer;               //malloc    int i;    char *prefix,*suffix;    //int cIsInDic=TRUE;    DIC *curBuffer;         if(!(inFile=fopen(inFileName,"r"))){        printf("源文件打开失败！\n");        return;    }    if(!(outFile=fopen(outFileName,"w"))){        printf("目标文件建立失败！\n");        return;    }        prefix=(char *)malloc(100);    suffix=(char *)malloc(100);    //prefix=fgetc(inFile);    //suffix=fgetc(inFile);    fgets(prefix,2,inFile);    fgets(suffix,2,inFile);        while(!feof(inFile))    {        strcpy(buffer,prefix);        strcat(buffer,suffix);        if(curBuffer=isFindDic(buffer)){            fputc(curBuffer->code,outFile);            prefix=buffer;            fgets(suffix,2,inFile);        }        else{            string_tab[count].character=buffer;            string_tab[count].code=count;            string_tab[++count].character=END;            curBuffer=findInDic(prefix);            fputc(curBuffer->code,outFile);            prefix=suffix;            fgets(suffix,2,inFile);        }    }    free(prefix);    free(suffix);    fclose(inFile);    fclose(outFile);}/*查找函数1 *判断当前字串是否存在于字典当中 *若存在返回结构体指针，若不存在返回FALSE */DIC *isFindDic(char *buffer){    int i=0;    DIC *curBuffer;    while(END!=string_tab[i].character){        if(string_tab[i].character==buffer){            curBuffer=&string_tab[i];            return curBuffer;        }        i++;    }    return FALSE;}/*查找函数2*/DIC *findInDic(char *prefix){    int i=0;    DIC *curBuffer;    while(END!=string_tab[i].character){        if(string_tab[i].character==prefix){            curBuffer=&string_tab[i];            return curBuffer;                    }        i++;    }    }int main(int argc, char *argv[]){    char inFileName[20],outFileName[20];        initDic();    gets(inFileName);    gets(outFileName);        compression(inFileName,outFileName);    //free(character)                    return 0;}