View Compilation Error

0_0_30881865_11791.cpp:1:9: error: #include expects "FILENAME" or <FILENAME>
 #include
         ^
0_0_30881865_11791.cpp: In function 'int main()':
0_0_30881865_11791.cpp:35:33: error: 'scanf' was not declared in this scope
         while(scanf("%d%d",&m,&n)!=EOF)
                                 ^
0_0_30881865_11791.cpp:35:36: error: 'EOF' was not declared in this scope
         while(scanf("%d%d",&m,&n)!=EOF)
                                    ^
0_0_30881865_11791.cpp:39:39: error: 'printf' was not declared in this scope
                   printf("%d\n",f(m,n));
                                       ^