Problem about the NIOS II IDE c code

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Choose a writable mount point (user folder), folder must exist, and run your Application

FILE *fpl;
fpl=fopen("qq.txt","w");
fprintf(fpl,"111 %d\n",velocity);
fclose(fpl);

File qq.txt should reside there.

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Thank you.

I have to try this code, but it seill doesn't work.

May I ask some question, Should I have to set up anything in NIOS II or file??

MY verisonal is NIOS II 9.0v, and I try that code directly.

I write in my c file of NIOS II, But it doesn't work.

and I try to Build the *.txt file first.

It sill doesn't work . Could you help me other advice. Thanks