View Compilation Error

0_0_33956481_3830.cpp:1:10: error: #include expects "FILENAME" or <FILENAME>
 #include 
          ^
0_0_33956481_3830.cpp: In function 'int main()':
0_0_33956481_3830.cpp:5:20: error: 'scanf' was not declared in this scope
  scanf("%d%d",&a,&b); 
                    ^
0_0_33956481_3830.cpp:7:15: error: 'printf' was not declared in this scope
  printf("%d",c); 
               ^