linux中把一个磁盘文件信息复制到另一个中，总是出问题

Question

以下是源代码，实现的结果是，磁盘中的信息是隔一个字符复制的，不知道为什么，求指点，谢谢。
#include
#include
#include

main()
{
FILE *fp;
FILE *fp1;
char ch;
char filename[10];
char filename1[10];
char filepath[50];
char filepath1[100];
printf("give a file a filename: ");
scanf("%s",filename);
sprintf(filepath,"/socketTest/photo/%s",filename);
if((fp=fopen(filepath,"w+"))==NULL)
{
printf("cannot open the file <%s>\n",filename);
return 0;
}//if
ch=getchar();
printf("please input:\n");
ch=getchar();
while(ch!='#')
{
fputc(ch,fp);
ch=getchar();

}//while

fclose(fp);

printf("give another file a filename: ");
scanf("%s",filename1);
ch=getchar();
sprintf(filepath1,"/socketTest/photo/%s",filename1);

if((fp1=fopen(filepath1,"w+"))==NULL)
{
printf("cannot open the file <%s>\n",filename1);
return 0;
}//if
printf("the length of %s is %d\n",filename1,strlen(filepath1));
if((fp=fopen(filepath,"r"))==NULL)
{
printf("cannot open the file <%s>\n",filename);
return 0;
}//if

while(fgetc(fp)!=EOF)
{
printf("%c",fgetc(fp));
fputc(fgetc(fp),fp1);

}

fclose(fp1);
fclose(fp);
printf("\n file %s is ok!\n",filename1);

}//main

Answer 1

下面的代码使得字符指针fp一共向前移动了3次，不跳反而不正常了。

while(fgetc(fp)!=EOF)
 {
 printf("%c",fgetc(fp));
 fputc(fgetc(fp),fp1);
 }

fgetc(fp)调用了3次...

1楼正解.