How do I check if my program has data piped into it.
- by monkeyking
Im writing a program that should read input via stdin, so I have the following contruct.
FILE *fp=stdin;
But this just hangs if the user hasn't piped anything into the program, how can I check if the user is actually piping data into my program like
gunzip -c file.gz |./a.out #should work
./a.out #should exit program with nice msg.
thanks