Unable to use fprintf

This looks ok to me. Maybe there is some problem with the rest of the source. Could you share the whole file?

Also what exact compiler version are you using and for which ISA?

Thanks

ki

Take this as example:

#include <stdio.h>

FILE *fid;

void main()
{
 printf("Hello world!\n");
 
 //fid = fopen("test","w");
 //fprintf(fid,"Hello, world\n");
 //fclose(fid);
}

This works. But if I uncomment the last lines, I get compiler errors:

"main.c", line 10: error: unrecognized token
"main.c", line 10: error: expected an expression
"main.c", line 11: error: unrecognized token
"main.c", line 11: error: expected an expression

I am using css3.1.0. What is ISA?

and I used rts6700.lib...is that the right one?

If you go to 'Help->About', a dialog box will appear. Could you tell me the number for 'Code Generation Tools'?

Also ISA - Instruction Set Architecture. Like C6000, C5000, etc. What TI target are you using?

'Code Generation Tools': v5.1.0

And the target is C6713.

Your code looks fine. I'm wondering if you have some hidden character in your file that is not showing up in the editor. Did you cut and paste that code example from somewhere? Could you try creating a new source file and typing it from scratch?

No there is no hidden characters. I just made up this example file to try things out.

Is there any settings in the CCS that can cause this problem?

As far as i know it should work.

I'll move this to the compiler forum for more ideas.

Thanks

ki

The code in the forum post looks fine and works fine for me for that compiler version.  Please attach the exact source file.  What command-line options are you using?

'unrecognized token' is a C parser message that means the source code contains a character the parser cannot handle, such as a dollar sign.  I do not see such a character in your example; perhaps it is a non-printing character.

By the way, I can write data to a file located under the default directory. But it seems like I can't open/write to a file under for example c: root using this line:

fid = fopen("c:\output.txt","w");

Is there any error i am making?

Hello,

Could you please explain what you mean "removed the white space before and behind the lines. and then it works" ?

I have the similar code that doesnt work. File was not created and nothing was written if file existed.

fptr = fopen("file.txt", "w");

fprintf(fptr,"%s","Hello world");

fclose(fptr);

The compiler (CCS 3.1) did not find any compile error.

Thanks

The Phuong NGUYEN said:

please explain what you mean "removed the white space before and behind the lines. and then it works"

The source file contained some non-ASCII characters on the lines which were getting errors.  When these lines were viewed with an ordinary text editor, these non-ASCII characters appeared as simple space.  But they weren't.  When the user removed the non-ASCII characters, then everything worked.

In your case, make sure fopen is not returning NULL.  If it is returning NULL, make sure the system has permissions to create and write the file.  The file will be created in the same directory where the executable .out file is loaded from.  Other similar hints are contained in this wiki article.

Thanks and regards,

-George