View Compilation Error

0_0_18681916_19462.cpp: In function 'int add(int, int)':
0_0_18681916_19462.cpp:48:31: error: expected primary-expression before '%' token
     p[now].val=(++tre[x].val);%0
                               ^
0_0_18681916_19462.cpp:48:32: error: expected '}' at end of input
     p[now].val=(++tre[x].val);%0
                                ^