View Compilation Error

0_0_18671611_4858.cpp:1:9: error: #include expects "FILENAME" or <FILENAME>
 #include
         ^
0_0_18671611_4858.cpp: In function 'int main()':
0_0_18671611_4858.cpp:5:39: error: 'scanf' was not declared in this scope
     while(scanf("%c%c%c%c",&a,&b,&c,&d)!=EOF)
                                       ^
0_0_18671611_4858.cpp:5:42: error: 'EOF' was not declared in this scope
     while(scanf("%c%c%c%c",&a,&b,&c,&d)!=EOF)
                                          ^
0_0_18671611_4858.cpp:6:6: error: 'www' was not declared in this scope
     {www.2cto.com
      ^
0_0_18671611_4858.cpp:19:34: error: 'printf' was not declared in this scope
         printf("%c %c %c\n",a,b,c);
                                  ^