C-哈夫曼编码

/*author:windy_2*/
/*修正版*/
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
typedef struct slink
{
    char data;
    int wp;
    int bm;
    int mark;
    struct slink *left;
    struct slink *right;
}*link;
struct hfm
{
    char data;
    int wp;
};
struct T
{
    int data;
    struct T *next;
};
struct te
{
    int data;
    struct te *next;
};
struct slink* create_tree(struct hfm arr[],int len);
void print(struct slink *root);
int pop();
void push(int k);
struct T *T;
struct te *te;
int pop_s(struct T *strack);
void push_t(int k);
int pop_t();
int main()
{
    struct slink *root;
    int i,k=0;
    char str[20];
    char a[20];
    int b[20];
    int count,j;
    struct hfm *arr;
    T = (struct T*)malloc(sizeof(struct T));
    T->data = 0;
    T->next = NULL;
    te = (struct te*)malloc(sizeof(struct te));
    te->data = 0;
    te->next = NULL;
    printf("请输入你要进行编码的字符串: 
");
    scanf("%s",str);
    if(str[strlen(str)] == '')
    {
        str[strlen(str)]=NULL;
    }
    for(i = 0;i < strlen(str);i++)
    {
        if(str[i]!='#')
        {
            a[k] = str[i];
            b[k] = 0;
            for(j = 0;j<strlen(str);j++)
            {
                if(str[j] == str[i])
                {
                    b[k]++;
                }
            }
            for(j = 0;j<strlen(str);j++)
            {
                if(str[j] == a[k])
                {
                    str[j] = '#';
                }
            }
            k++;
        }
        count = k;
    }
    arr = (struct hfm*)malloc(sizeof(struct hfm)*count);
    for(i = 0;i < count;i++)
    {
        arr[i].data = a[i];
        arr[i].wp = b[i];
    }
    root = (struct slink*)malloc(sizeof(struct slink));
    root = create_tree(arr,count);
    print(root);
}
struct slink* create_tree(struct hfm arr[],int len)
{
    link ptrarr[20];
    link ptr,root = NULL;
    int i,k1 = -1,k2,j;
    for(i = 0;i < len;i++)
    {
        ptr = (link)malloc(sizeof(struct slink));
        ptr->data = arr[i].data;
        ptr->wp = arr[i].wp;
        ptr->mark = 0;
        ptr->left = NULL;
        ptr->right = NULL;
        ptrarr[i] = ptr;
    }
    for(i = 1;i < len;i++)
    {
        for(j = 0;j < len;j++)
        {
            if(ptrarr[j]!=NULL&&k1==-1)
            {
                k1 = j;
                continue;
            }
            if(ptrarr[j]!=NULL)
            {
                k2 = j;
                break;
            }
        }
        for(j = k2;j < len;j++)
        {
            if(ptrarr[j] != NULL)
            {
                if(ptrarr[j]->wp > ptrarr[k1]->wp)
                {
                    k2 = k1;
                    k1 = j;
                }
                else if(ptrarr[j]->wp < ptrarr[k2]->wp)
                {
                    k2 = j;
                }
            }
        }
        root = (link)malloc(sizeof(struct slink));
        ptrarr[k1]->bm = 0;
        ptrarr[k2]->bm = 1;
        root->wp = ptrarr[k1]->wp + ptrarr[k2]->wp;
        root->data = '!';
        root->mark = 0;
        root->left = ptrarr[k1];
        root->right = ptrarr[k2];
        ptrarr[k1] = root;
        ptrarr[k2] = NULL;
    }
    return root;
}
void print(struct slink *root)
{
    int temp;
    struct T *p;
    if(root == NULL)
    {
        return;
    }
    else
    {
        if(root->bm == 0||root->bm == 1)
        {
            push(root->bm);
        }
        if(root->data != '!')
        {
            printf("%c的哈夫曼编码为: ",root->data);
            root->mark = 1;
            temp = pop();
            push_t(temp);
            p = T->next;
            while(p!=NULL)
            {
                temp = pop_s(p);
                push_t(temp);
                p = p->next;
            }
            while(te->next!=NULL)
            {
                temp = pop_t();
                printf("%d",temp);
            }
            printf("
");
            if(root->bm == 1)
            {
                temp = pop();
            }
        }
        print(root->left);
        print(root->right);
    }
}
int pop()
{
    struct T *p;
    int n;
    if(T->next == NULL)
    {
        return 0;
    }
    else
    {
        p = T->next;
        n = p->data;
        T->next = p->next;
        free(p);
        return n;
    }
}
void push(int k)
{
    struct T *strack;
    strack = (struct T*)malloc(sizeof(struct T));
    strack->data = k;
    strack->next = T->next;
    T->next = strack;
}
int pop_s(struct T *strack)
{
    struct T *p;
    int n;
    if(T->next == NULL)
    {
        return 0;
    }
    else
    {
        p = strack;
        n = p->data;
        return n;
    }
}
void push_t(int k)
{
    struct te *strack;
    strack = (struct te*)malloc(sizeof(struct te));
    strack->data = k;
    strack->next = te->next;
    te->next = strack;
}
int pop_t()
{
    struct te *p;
    int n;
    if(te->next == NULL)
    {
        return -1;
    }
    else
    {
        p = te->next;
        n = p->data;
        te->next = p->next;
        free(p);
        return n;
    }
}