View Compilation Error

0_0_29390151_17305.cpp:1:2: error: invalid preprocessing directive #incldeu
 #incldeu<bits/stdc++.h>
  ^
0_0_29390151_17305.cpp: In function 'int main()':
0_0_29390151_17305.cpp:6:22: error: 'scanf' was not declared in this scope
  while((scanf("%d",&l)!=EOF)&&(l!=0))
                      ^
0_0_29390151_17305.cpp:6:25: error: 'EOF' was not declared in this scope
  while((scanf("%d",&l)!=EOF)&&(l!=0))
                         ^
0_0_29390151_17305.cpp:8:41: error: 'printf' was not declared in this scope
   printf("%.2lf\n",((l*l)/3.1415926)/2.0);
                                         ^