View Compilation Error

0_0_13799574_406.cpp:1:9: error: #include expects "FILENAME" or <FILENAME>
 #include
         ^
0_0_13799574_406.cpp:2:9: error: #include expects "FILENAME" or <FILENAME>
 #include
         ^
0_0_13799574_406.cpp:8:3: error: stray '\' in program
   int a=pow(b,1.0\n);
   ^
0_0_13799574_406.cpp: In function 'int main()':
0_0_13799574_406.cpp:6:27: error: 'scanf' was not declared in this scope
  while(~scanf("%d%d",&b,&n),b||n)
                           ^
0_0_13799574_406.cpp:8:19: error: expected ')' before 'n'
   int a=pow(b,1.0\n);
                   ^
0_0_13799574_406.cpp:8:20: error: 'pow' was not declared in this scope
   int a=pow(b,1.0\n);
                    ^
0_0_13799574_406.cpp:10:20: error: expected ')' before 'pow'
   if(b-pow(ans,n)  pow(ans+1,n)-b)
                    ^
0_0_13799574_406.cpp:12:20: error: 'printf' was not declared in this scope
   printf("%d\n",ans);
                    ^