View Compilation Error

0_0_22079593_8907.cpp:1:9: error: #include expects "FILENAME" or <FILENAME>
 #include
         ^
0_0_22079593_8907.cpp:2:9: error: #include expects "FILENAME" or <FILENAME>
 #include
         ^
0_0_22079593_8907.cpp: In function 'int main()':
0_0_22079593_8907.cpp:9:23: error: 'scanf' was not declared in this scope
     while(scanf("%s",n)!=EOF)
                       ^
0_0_22079593_8907.cpp:9:26: error: 'EOF' was not declared in this scope
     while(scanf("%s",n)!=EOF)
                          ^
0_0_22079593_8907.cpp:12:15: error: 'strlen' was not declared in this scope
   len=strlen(n); 
               ^
0_0_22079593_8907.cpp:16:18: error: 'printf' was not declared in this scope
   printf("%d\n",t);
                  ^
0_0_22079593_8907.cpp: At global scope:
0_0_22079593_8907.cpp:18:2: error: expected unqualified-id before 'return'
  return 0;
  ^
0_0_22079593_8907.cpp:19:1: error: expected declaration before '}' token
 }
 ^