View Compilation Error

0_0_35515485_18339.cpp:1:1: error: 'include' does not name a type
 include <stdio.h>
 ^
0_0_35515485_18339.cpp: In function 'int main()':
0_0_35515485_18339.cpp:7:24: error: 'scanf' was not declared in this scope
     while(scanf("%d",&n)!=EOF){
                        ^
0_0_35515485_18339.cpp:7:27: error: 'EOF' was not declared in this scope
     while(scanf("%d",&n)!=EOF){
                           ^
0_0_35515485_18339.cpp:8:21: error: 'getchar' was not declared in this scope
             getchar();
                     ^
0_0_35515485_18339.cpp:11:21: error: 'gets' was not declared in this scope
             gets(str);
                     ^
0_0_35515485_18339.cpp:16:38: error: 'printf' was not declared in this scope
                         printf("no\n");
                                      ^
0_0_35515485_18339.cpp:21:31: error: 'printf' was not declared in this scope
                 printf("yes\n");
                               ^
0_0_35515485_18339.cpp:24:30: error: 'printf' was not declared in this scope
                 printf("no\n");
                              ^