View Compilation Error

0_0_27275302_18796.cpp:2:9: error: #include expects "FILENAME" or <FILENAME>
 #include
         ^
0_0_27275302_18796.cpp: In function 'int main()':
0_0_27275302_18796.cpp:6:24: error: 'scanf' was not declared in this scope
     while(scanf("%d",&k)!=EOF)
                        ^
0_0_27275302_18796.cpp:6:27: error: 'EOF' was not declared in this scope
     while(scanf("%d",&k)!=EOF)
                           ^
0_0_27275302_18796.cpp:17:24: error: 'printf' was not declared in this scope
         printf("%d\n",b);
                        ^