View Compilation Error

0_0_26171483_29436.cpp: In function 'int main()':
0_0_26171483_29436.cpp:522:16: error: 'struct PT' has no member named 'in'
    PT tmp; tmp.in();
                ^
0_0_26171483_29436.cpp:525:5: error: 'struct PT' has no member named 'in'
   A.in(), B.in();
     ^
0_0_26171483_29436.cpp:525:13: error: 'struct PT' has no member named 'in'
   A.in(), B.in();
             ^