View Compilation Error

0_0_24104382_27826.c:1:1: error: expected identifier or '(' before '/' token
 //数独
 ^
0_0_24104382_27826.c:1:1: error: stray '\312' in program
0_0_24104382_27826.c:1:1: error: stray '\375' in program
0_0_24104382_27826.c:1:1: error: stray '\266' in program
0_0_24104382_27826.c:1:1: error: stray '\300' in program
In file included from GCC4.9.2/x86_64-w64-mingw32/include/_mingw.h:282:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/crtdefs.h:10,
                 from GCC4.9.2/x86_64-w64-mingw32/include/stdio.h:9,
                 from 0_0_24104382_27826.c:2:
GCC4.9.2/x86_64-w64-mingw32/include/vadefs.h:29:11: error: unknown type name '__gnuc_va_list'
   typedef __gnuc_va_list va_list;
           ^
0_0_24104382_27826.c: In function 'main':
0_0_24104382_27826.c:62:5: error: expected expression before '/' token
     //freopen("out.txt", "r", stdout);
     ^