View Compilation Error

0_0_30828933_12702.cpp: In function 'int main()':
0_0_30828933_12702.cpp:8:18: error: 'scanf' was not declared in this scope
     scanf("%d",&T);
                  ^
0_0_30828933_12702.cpp:16:42: error: 'printf' was not declared in this scope
   printf("Case %d: %.10lf\n",Case++,dp[4]);
                                          ^