View Compilation Error

0_0_21659336_22894.cpp:1:31: error: stray '#' in program
 <span style="font-size:18px;">#include<bits/stdc++.h>
                               ^
0_0_21659336_22894.cpp:1:1: error: expected unqualified-id before '<' token
 <span style="font-size:18px;">#include<bits/stdc++.h>
 ^
0_0_21659336_22894.cpp: In function 'int main()':
0_0_21659336_22894.cpp:6:29: error: 'scanf' was not declared in this scope
         while(~scanf("%d",&n)){
                             ^
0_0_21659336_22894.cpp:12:34: error: 'printf' was not declared in this scope
                 printf("%d\n",num);
                                  ^