View Compilation Error

0_0_25094212_11149.cpp:1:9: error: #include expects "FILENAME" or <FILENAME>
 #include
         ^
0_0_25094212_11149.cpp:2:9: error: #include expects "FILENAME" or <FILENAME>
 #include
         ^
0_0_25094212_11149.cpp:3:9: error: #include expects "FILENAME" or <FILENAME>
 #include
         ^
0_0_25094212_11149.cpp:4:9: error: #include expects "FILENAME" or <FILENAME>
 #include
         ^
0_0_25094212_11149.cpp:5:9: error: #include expects "FILENAME" or <FILENAME>
 #include
         ^
0_0_25094212_11149.cpp: In function 'int main()':
0_0_25094212_11149.cpp:45:18: error: 'scanf' was not declared in this scope
     scanf("%d",&T);
                  ^
0_0_25094212_11149.cpp:61:45: error: 'printf' was not declared in this scope
         printf("Case #%d: %.6lf\n",cas++,ans);
                                             ^