View Compilation Error

0_0_16202794_15492.cpp: In function 'void ins(char*)':
0_0_16202794_15492.cpp:15:6: error: expected primary-expression before '%' token
   if(%2
      ^
0_0_16202794_15492.cpp:15:7: error: expected ')' at end of input
   if(%2
       ^
0_0_16202794_15492.cpp:15:7: error: expected statement at end of input
0_0_16202794_15492.cpp:15:7: error: expected '}' at end of input
0_0_16202794_15492.cpp:15:7: error: expected '}' at end of input