View Compilation Error

0_0_30018253_28440.cpp: In function 'int main()':
0_0_30018253_28440.cpp:43:13: error: 'tmp' was not declared in this scope
             tmp=powl(n,1.0/3);
             ^
0_0_30018253_28440.cpp:44:17: error: 'q' was not declared in this scope
                 q=tmp+0.5;
                 ^