View Compilation Error

0_0_14499571_2386.cpp: In function 'int main()':
0_0_14499571_2386.cpp:43:9: error: 'l' was not declared in this scope
         l = n;r = 0;
         ^
0_0_14499571_2386.cpp:43:15: error: 'r' was not declared in this scope
         l = n;r = 0;
               ^