从一个文件复制内容到另一个文件多出了一个字符

#include <stdio.h>

#include <stdlib.h>

void main()

{

	FILE *in,*out;

	char inname[10],outname[10];

	char ch;

	printf("Put infile name:\n");

	scanf("%s",inname);

	printf("Put outfile name\n");

	scanf("%s",outname);

	if ((in=fopen(inname,"r"))==NULL)



	{

		printf("There is no existing %s\n",inname);

		exit(0);



	}



	if ((out=fopen(outname,"w"))==NULL)

	{

		printf("NO existing file,then creat\n");

		if ((out=fopen(outname,"w+"))==NULL)

		{

			printf("Error\n");

			exit(0);

		}

	}

    while(!feof(in))



	{ch=fgetc(in);

		fputc(ch,out);

   

	 putchar(ch);

	}   

	fclose(in);

	fclose(out);

}