View Compilation Error

0_0_35844969_8799.cpp: In function 'int main()':
0_0_35844969_8799.cpp:17:35: error: 'pow' was not declared in this scope
   distance = pow(getAbs(x2, x1), 2) + pow(getAbs(y2, y1), 2);
                                   ^
0_0_35844969_8799.cpp:18:33: error: 'sqrt' was not declared in this scope
   printf("%.2f\n", sqrt(distance));
                                 ^