I get the error error:expected ':', ',' or')' before '.' token in the following code:
#include<stdio.h>
#include<sys/types.h>
#include<sys/stat.h>
#include<fcntl.h>
void filecopy(FILE*,FILE*);
int main()
{
    FILE*fpin,*fpout;
    fpin = fopen("file_a.dat", "r");//
    fpout = fopen("file_b.dat", "w");
    filecopy(fpin, fpout);
    fclose ( fpin );
    fclose  ( fpout );
}
void filecopy(FILE*fpin.FILE*fpout)//(FILE*fpin,FILE*fpout)
{
    char ch;
    ch = getc (fpin);
    while (!feof(fpin));//delete the ';'
    {
        putc (ch,fpout);
        ch = getc (fpin);
    }
}
PS:Again,I'm sorry for my hasty and meaningless question.It was blame for my careless coding habit ,and don't think it over.I'll pay attention to asking question on stackoverflow.But I stil want to say thanks to the people who had answered and commented.
 
     
    