哈夫曼编码压缩和解压文件，已经把txt文件放在根目录下，编译没错但运行时会跳出“debug assertion failed”的错误提示框，程序如下，请高手指正。（虽然稍长，但错误应该好找吧。。。似乎是指针出错？）

#include<iostream>
#include<fstream>
#include<string>
#include<iomanip>
using namespace std;
string file[600000];
int ele_count=0;
float bite_count=0;
struct huffchar{
    int count;
    char data;
};
int count=1;
huffchar huff[1000];
bool char_judge(char c)
{
    for(int i=1;i<=count;i++)
        if(huff[i].data=c)
        {
            huff[i].count++;
            return true;
        }
        return false;
}
void char_count(char c)
{
    huff[count].data=c;
    huff[count++].count++;
}
void read_file()
{
    char c;
    ifstream infile;
    infile.open("d:\\daiyasuo.txt");
    if(!infile)
    {
        cout<<"不能打开文件"<<endl;
        exit(0);
    }
    cout<<"读入的文件中的内容为："<<endl;
    while((c=infile.get())!=EOF)
    {
        file[++ele_count]=c;
        if(!char_judge(c))
            char_count(c);
    }
    cout<<endl;
}
struct huff_tree{
    int parent;
    int lchild;
    int rchild;
    int weight;
};
int sum;//结点个数
huff_tree huffman[1000];
void create()
{
    int min1,min2;
    int loc1,loc2;//指向权值最小数的位置
    for(int i=1;i<=sum;i++)
    {
        huffman[i].parent=0;
        huffman[i].lchild=0;
        huffman[i].rchild=0;
        huffman[i].weight=0;
    }
    for(int m=1;m<count;m++)
        huffman[m].weight=huff[m].count;
    sum=2*count-1;
    for(int j=count;j<=sum;j++)
    {
        loc1=loc2=0;
        min1=min2=20000;
        for(int k=1;k<j;k++)
            if(huffman[k].parent==0)
                if(huffman[k].weight<=min1)
                {
                    min2=min1;
                    min1=huffman[k].weight;
                    loc2=loc1;
                    loc1=k;
                }
                else
                    if(huffman[k].weight<=min2)
                    {
                        min2=huffman[k].weight;
                        loc2=k;
                    }
                    huffman[loc1].parent=j;
                    huffman[loc2].parent=j;
                    huffman[j].lchild=loc1;
                    huffman[j].weight=huffman[loc1].weight+huffman[loc2].weight;
    }
}
struct huff_code
{
    string bits[100];
    int count;
    string c;
};
huff_code code[100];
void huffmancode()
{
    int r,p;
    int count1=0;
    for(int y=1;y<=count;y++)
    {
        r=y;
        code[y].c=huff[y].data;
        p=huffman[y].parent;
        while(p!=0)
        {
            if(huffman[p].lchild==r)
                code[y].bits[++count1]='0';
            else code[y].bits[++count1]='1';
            r=p;
            p=huffman[p].parent;
        }
        code[y].count=count1;
        count1=0;
    }
    for(int t=1;t<=count;t++)
    {
        cout<<"字符"<<code[t].c<<" 编码： ";
        int r=code[t].count;
        while(r)
            cout<<code[t].bits[r--];
        cout<<endl;
    }
}
string str;
void code_huffman_file()
{
    ofstream fp;
    cout<<"请输入文件名："<<endl<<"例如：daiyasuo.txt"<<endl;
    cout<<"该文件的压缩文件："<<endl;
    cin>>str;
    fp.open(str.c_str());
    if(!fp)
    {
        cout<<"不能打开"<<str<<"文件"<<endl;
        exit(0);
    }
    for(int j=1;j<=ele_count;j++)
    {
        for(int i=1;i<=count;i++)
            if(file[j]==code[i].c)
            {
                for(int k=code[i].count;k>0;k--)
                {
                    fp<<code[i].bits[k];bite_count++;
                }
                break;
            }
    }
    fp.close();
}
void code_file_out()
{
    ifstream fp1;
    ofstream fp2;
    fp1.open(str.c_str());
    if(!fp1)
    {
        cout<<"不能打开"<<str<<"文件"<<endl;
        exit(0);
    }
    char inchar;
    cout<<"请输入文件名："<<endl<<"例如：huffman2.txt"<<endl;
    cout<<"该文件解压后的文件："<<endl;
    string s1;
    cin>>s1;
    fp2.open(s1.c_str());
    if(!fp2)
    {
        cout<<"不能打开"<<s1<<"文件"<<endl;
        exit(0);
    }
    for(int ptr=sum;!fp1.eof();)
    {
        fp1>>inchar;
        if(inchar=='1')
            ptr=huffman[ptr].rchild;
        else ptr=huffman[ptr].lchild;
        if(huffman[ptr].lchild==0&&huffman[ptr].rchild==0)
        {
            fp2<<huff[ptr].data;
            ptr=sum;
        }
    }
    cout<<endl<<"请检查原文件"<<"daiyasuo.txt"<<"与解压文件"<<s1<<endl<<endl<<endl;
    cout<<"--------------------------------请检查---------------------"<<endl;
}
void rate()
{
    float v;
    v=bite_count/8/ele_count*100;
    cout<<"压缩文件的压缩比例为："<<v<<"%"<<endl;
}
void main()
{
    cout<<"*************数据结构课程设计**************"<<endl;
    cout<<"------------------------〖Huffman树文件压缩与解压〗------------------------"<<endl;
    system("pause");
    read_file();
    create();
    huff_code();
    code_file_out();
    rate();
    cout<<endl<<"文件的压缩与解压完成！"<<endl;
}