How to disable printf ??

[mvairavan]

i have a c code which uses some pre-compiled library calls, i just want to stop the printf calls inside that library only after certain point.

Say like

void main(){
//do some stuff

printf("blah blah..");

if(condn){
LIB_call(); //don't print
}else {
LIB_call(); //Print
}
}

Well if it was not a precompiled one i could have used

#define printf if(condn){//}else{printf}

which would comment out the unwanted printf's, but its a precompiled one
It will be fine even if i can push the outputs to a separate file or something like that, i jus wanna separate them.

[hk_mp5kpdw]

printf writes to stdout which I believe can be treated as a standard file handle. So... you can try closing stdout with a call to fclose followed by a call to your pre-compiled library function and then reopen stdout after that (freopen) to re-enable output.

Others may be able to provide more detail or clarifications if needed.