C 程序"expected ‘)’ before ‘{’ token"上的生成文件错误

Question

我尝试在以下C程序上制作makefile时会出现错误。

int main()
{
    char  filename_src[101], filename_dest[101];
    printf("nSource file: ");
    gets_s(filename_src, 100);
    printf("nDestination filename: ");
    gets_s(filename_dest, 100);
    if(copy_file(filename_src, filename_dest) == 0)
        printf("Copy Successfuln");
    else
        fprintf(stderr, "Error during copy!");
    copyfile( filename_src, filename_dest );
}
int copyfile( const char *test1, const char *test2 )
{
    int infile, outfile;
    ssize_t nread;
    char buffer[BUFSIZE];
    if( ( infile = open(test1, O_RDONLY) ) == -1 )
      return (-1);
    if( ( outfile = open(test2,O_WRONLY|O_CREAT|O_TRUNC,PERM ) == -1)
    {
        close(infile);
        return (-2);
    }
    /* now read from test1 BUFSIZE chars at a time*/
    while( (nread = read(infile, buffer, BUFSIZE) ) > 0)
    {
        /*write buffer to output file*/
        if( write(outfile, buffer, nread) < nread )
        {
            close(infile);
            close(outfile);
            return (-3);        /*write error*/
        }
    }
    close(infile);
    close(outfile);
    if( nread == -1 )
      return (-4);              /*error on last read*/
    else
      return (0);               /*all is well */
}

这是我的C程序。当我尝试在终端上制作makefile时，我会在" {'oken"之前遇到"预期"）。谁能告诉我代码中的问题在哪里？

谢谢

Answer 1

if  ( ( outfile = open(test2,O_WRONLY|O_CREAT|O_TRUNC,PERM ) == -1)
    ^ 2               1                                    1      2 

您可以看到此括号是无与伦比的。