View Compilation Error

0_0_30025336_11830.cpp: In function 'void find()':
0_0_30025336_11830.cpp:33:5: error: 't' was not declared in this scope
     t=x;
     ^
0_0_30025336_11830.cpp:36:8: error: 't' was not declared in this scope
   book[t]=1;
        ^