View Compilation Error

0_0_33154737_2877.cpp: In function 'void extend(int)':
0_0_33154737_2877.cpp:20:23: error: expected primary-expression at end of input
   if(len[q] == len[p] %
                       ^
0_0_33154737_2877.cpp:20:23: error: expected ')' at end of input
0_0_33154737_2877.cpp:20:23: error: expected statement at end of input
0_0_33154737_2877.cpp:20:23: error: expected '}' at end of input
0_0_33154737_2877.cpp:20:23: error: expected '}' at end of input