View Compilation Error

0_0_11535383_8654.cpp: In function `void maintain(int)':
0_0_11535383_8654.cpp:85: error: `l' undeclared (first use this function)
0_0_11535383_8654.cpp:85: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_11535383_8654.cpp:85: error: `r' undeclared (first use this function)