View Compilation Error

0_0_35557782_14530.cpp: In function 'int main()':
0_0_35557782_14530.cpp:31:19: error: too few arguments to function 'int putchar(int)'
   if(n>0) putchar();
                   ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/locale.h:12:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/clocale:42,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/x86_64-w64-mingw32/bits/stdc++.h:40,
                 from 0_0_35557782_14530.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/stdio.h:503:15: note: declared here
   int __cdecl putchar(int _Ch);
               ^