View Compilation Error

0_0_35241175_30369.cpp:7:8: error: no macro name given in #define directive
 #define
        ^
0_0_35241175_30369.cpp: In function 'int main()':
0_0_35241175_30369.cpp:31:7: error: 'n' was not declared in this scope
     m=n=0;
       ^