build error in Eclipse for C program

My project is named silence. I get the following error even when I build even a simple printf statement.

Build of configuration Debug for project silence **

Internal Builder is used for build ** gcc -osilence.exe source\read_pcm.o c:/eclipse/mingw/bin/../lib/gcc/mingw32/4.4.1-dw2/../../../../mingw32/bin/ld.exe: cannot open output file silence.exe: Permission denied collect2: ld returned 1 exit status Build error occurred, build is stopped Time consumed: 141 ms.

Please adv开发者_Python百科ise.

Your program may still be running. Try stopping it by using the small red square on the console window (the one for your program). Another way is switching to the "Debug" perspective, selecting your running program, and stopping it there (also the small red square). (link)