View Compilation Error

0_0_30734465_15921.cpp:1:9: error: #include expects "FILENAME" or <FILENAME>
 #include
         ^
0_0_30734465_15921.cpp: In function 'int main()':
0_0_30734465_15921.cpp:5:26: error: 'scanf' was not declared in this scope
      scanf("%d %d",&a, &b);
                          ^
0_0_30734465_15921.cpp:6:23: error: 'printf' was not declared in this scope
      printf("%d\n",a+b);
                       ^