View Compilation Error

0_0_19216997_22244.cpp: In function 'int main()':
0_0_19216997_22244.cpp:15:41: error: 'scanf' was not declared in this scope
  while(~scanf("%lf%lf%lf",&p.x,&p.y,&p.z))
                                         ^
0_0_19216997_22244.cpp:51:46: error: 'printf' was not declared in this scope
   printf("%.3lf %.3lf %.3lf\n",t5.x,t5.y,t5.z);
                                              ^