3.cpp

huffman 编码与译码 对任意文件二进制的编码与译码

#include <stdio.h>
#include <string.h>
main()
{
	FILE *fp1,*fp2,*fp3;
	char c[256][20],s[20],filename[20];
	int i,n;
	char ch;
	i=0;
	fp1=fopen("temp.txt","r");
	fscanf(fp1,"%d%s",&ch,s);
	while(!feof(fp1))
	{
		i++;
		strcpy(c[ch+128],s);
		fscanf(fp1,"%d%s",&ch,s);
	}
	fclose(fp1);
	n=i;
	printf("输入将编码的文件");
	gets(filename);
	fp2=fopen(filename,"rb");
	fp3=fopen("tem.txt","w");
	ch=fgetc(fp2);
	while(!feof(fp2))
	{
		fprintf(fp3,"%s",c[ch+128]);
		ch=fgetc(fp2);
	}
	fclose(fp2);
	fclose(fp3);
  remove(filename);
  rename("tem.txt",filename);

}