View Compilation Error

0_0_39194577_11790.cpp: In function 'void add(int, char, int)':
0_0_39194577_11790.cpp:28:16: error: 'in' cannot be used as a function
   28 |             in (t)++;
      |             ~~~^~~
0_0_39194577_11790.cpp:32:15: error: 'in' cannot be used as a function
   32 |             in(s)++;
      |             ~~^~~