View Compilation Error

0_0_32005670_27745.cpp: In function 'int main()':
0_0_32005670_27745.cpp:15:7: error: 'i' was not declared in this scope
  for( i=0;i<m-1;i++)
       ^
0_0_32005670_27745.cpp:17:6: error: 'i' was not declared in this scope
  for(i=0;i<n-1;i++)
      ^