View Compilation Error

0_0_30102668_29930.cpp: In function 'int main()':
0_0_30102668_29930.cpp:28:3: error: 'la' was not declared in this scope
   la = lb = 0;
   ^
0_0_30102668_29930.cpp:28:8: error: 'lb' was not declared in this scope
   la = lb = 0;
        ^