#include<stdio.h>
#include<conio.h>
#include<alloc.h>
#include"C:\windows\desktop\input.h"
#define MAXBITS 32
#define MAXNODES 512
#define MAXSYMBS 256
int hmin(void);
void hinsert(int,int);
//First structure 
struct codetype{
   int bits[MAXBITS];
   int startpos;
   };
//second structure
struct nodetype{
   int freq;
   int father;
   int isleft;
   };
//The structure defined
typedef struct hlist{
   int pos;
   int hfreq;
   struct hlist	*next;
   }hnode;
hnode *hroot=NULL,*traversal;
extern struct list a[256];
extern int n;
int hmin()
{
 int p;
 p = hroot->pos;
 traversal=hroot;
 hroot = traversal->next;
 free(traversal);
 return(p);
}
void hinsert(int p,int freq)
{
  hnode* new1=(hnode *)malloc(sizeof(hnode));
  new1->pos = p;
  new1->hfreq = freq;
  traversal = hroot;
  if(hroot == NULL)
  {
	hroot = new1;
	hroot->next = NULL;
	return;
  }
  if(hroot->next == NULL)
  {
	if(hroot->hfreq>new1->hfreq)
	{
		new1->next = hroot;
		hroot =new1;
		traversal->next =NULL;
		return;
	}
	else
	{
	   hroot->next =new1;
	   new1->next =NULL;
	   return;
	}
  }
  if(hroot->hfreq>=new1->hfreq)
  {
	new1->next =hroot;
	hroot = new1;
	return;
  }
 
  while(traversal->next->hfreq<new1->hfreq)
  {
	traversal=traversal->next;
	if(traversal->next==NULL)
	break;
  }
  if(traversal->next->hfreq>=new1->hfreq)
  {
	new1->next = traversal->next;
	traversal->next = new1;
	return;
  }
 
  new1->next = NULL;
  traversal->next = new1;
 
}
//Main form

int main(){
  struct codetype cd,code[MAXSYMBS];
  struct nodetype node[MAXNODES];
  int i,k,p,p1,p2,root;
 
  char symb,alph[MAXSYMBS];
  clrscr();
  for(i=0;i<MAXSYMBS;i++)
  alph[i]=' ';
  //scanf("%d",&n);
  input();
  for(i=0;i<n;i++){
	 flushall();
	// scanf("%c %d",&symb,&node[i].freq);
	 symb = a[i].alph;
	 node[i].freq = a[i].freq;
	 hinsert(i,node[i].freq);
 
	 alph[i]=symb;
	 }
 
  for(p=n;p<(2*n-1);p++){
 
	 p1 =hmin();
 
	 p2 =hmin();
 
	 node[p1].father = p;
	 node[p1].isleft = 1;
	 node[p2].father = p;
	 node[p2].isleft = 0;
	 node[p].freq =node[p1].freq+node[p2].freq;
	 hinsert(p,node[p].freq);
  }
	 root = hmin();
  for(i=0;i<n;i++){
	 cd.startpos = MAXBITS;
	 p=i;
	 while(p!=root){
		--cd.startpos ;
		if(node[p].isleft)
		   cd.bits[cd.startpos] =0;
		else
		   cd.bits[cd.startpos] =1;
		p =node[p].father;
	 }
	 for(k=cd.startpos;k<MAXBITS;k++)
		code[i].bits[k]=cd.bits[k];
	 code[i].startpos =cd.startpos;
  }
  for(i=0;i<n;i++){
	 printf("\n%c  %d",alph[i],node[i].freq);
	 for(k=code[i].startpos;k<MAXBITS;k++)
		printf(" %d",code[i].bits[k]);
	 printf("\n");
	 }
	 return(0);
  }
 
/*************************/
/*************************/
// INPUT.H
/*************************/
/*************************/
 
 //The actual huffman 
#include<stdio.h>
#include<conio.h>
struct list{
char alph;
int freq;
} ;
struct list a[256];
int n;
void input()
{
FILE *fin,*fout;
char *filein,*fileout,ch;
int i,k,f;
 
printf("enter the filename of from which the data is to be read::\n");
scanf("%s",filein);
fin=fopen(filein,"r");
for(i=0,n=0;i<256;i++)
{     f=0;k=0;
  while((ch=fgetc(fin))!=EOF)
  {
     if(ch==i)
     { f=1;
     a[n].alph=ch;
     k++;
     }
     }
     if(f==1){
     a[n].freq =k;
     n++;
     }
 
     rewind(fin);
}
 
 
fclose(fin);
 
getch();
 
}

/*************************/
/*************************/
// message.txt
/*************************/
/*************************/

AAAAABBBBACCCCCDDDFGGGGHI

So why didn't you put the comments in when you wrote it?

Also, how come you missed all the hints to use

tags when posting code.

It is a group project on Huffman algorithm and we are suppose to go out and find the code. It is bonus points to put the comments in and I am a first year math major and got stuck in this class I find it interesting but lost most of the time I understand the algorithms and the sorts but not C++

>>I am a moth major
what is a moth major? An Entomology major perhaps?

>>and don't understand C++ programming language
What you posted isn't c++. Its C, which is a different language.

What are the prerequisits for the class you are now taking? Is one of them at least one semester of C or C++ languages? Any other programming language?

Where in the world did you get all that horribly formatted code? It isn't necessary to manually add the line numbers if you use code tags correctly

[code=c++] // your code here

[/code]

How about you begin with commenting the bits you do understand, to the level you think you understand it.

Sure I could add some comments, but you might still be in the dark.

This article has been dead for over six months. Start a new discussion instead.