/in/foo.cc: In function 'void Output(int*, int)':
/in/foo.cc:5:12: warning: zero-length gnu_printf format string [-Wformat-zero-length]
   printf("");
            ^
/in/foo.cc: In function 'int FindMan(int*, int)':
/in/foo.cc:16:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^
/in/foo.cc: In function 'int FindMaxIndex(int*, int)':
/in/foo.cc:27:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^