View Compilation Error

0_0_37910770_23836.cpp:1:9: error: #include expects "FILENAME" or <FILENAME>
 #include
         ^
0_0_37910770_23836.cpp: In function 'int main()':
0_0_37910770_23836.cpp:5:36: error: 'scanf' was not declared in this scope
     while(scanf("%d %d %d",&n,&u,&d),n+u+d)
                                    ^
0_0_37910770_23836.cpp:17:34: error: 'printf' was not declared in this scope
         printf("%d\n",time1+time2);
                                  ^