View Compilation Error

0_0_20149265_11790.cpp: In function 'int main()':
0_0_20149265_11790.cpp:6:3: error: 'm' was not declared in this scope
   m=0,n=0;
   ^
0_0_20149265_11790.cpp:6:7: error: 'n' was not declared in this scope
   m=0,n=0;
       ^