View Compilation Error

0_0_30025550_22167.cpp: In function 'int main()':
0_0_30025550_22167.cpp:86:5: error: 'queue' was not declared in this scope
     queue<int>q;
     ^
0_0_30025550_22167.cpp:86:11: error: expected primary-expression before 'int'
     queue<int>q;
           ^
0_0_30025550_22167.cpp:87:5: error: 'q' was not declared in this scope
     q.push(i);
     ^