View Compilation Error

0_0_36065443_13664.cpp: In function 'bool searchp()':
0_0_36065443_13664.cpp:28:5: error: 'queue' was not declared in this scope
     queue<int>q;
     ^
0_0_36065443_13664.cpp:28:11: error: expected primary-expression before 'int'
     queue<int>q;
           ^
0_0_36065443_13664.cpp:36:13: error: 'q' was not declared in this scope
             q.push(i);
             ^
0_0_36065443_13664.cpp:40:13: error: 'q' was not declared in this scope
     while (!q.empty())
             ^