View Compilation Error

0_0_20788668_12206.cpp: In function 'int main()':
0_0_20788668_12206.cpp:43:25: error: invalid conversion from 'char' to 'const char*' [-fpermissive]
     if(ans1==-1)puts('0');
                         ^
In file included from 0_0_20788668_12206.cpp:9:0:
GCC4.9.2/x86_64-w64-mingw32/include/stdio.h:504:15: note: initializing argument 1 of 'int puts(const char*)'
   int __cdecl puts(const char *_Str);
               ^