View Compilation Error

0_0_14742242_3015.cpp:157:2: error: expected initializer before 'while'
  while(scanf("%d",&n) == 1 && n)
  ^
0_0_14742242_3015.cpp:167:8: error: expected constructor, destructor, or type conversion before '(' token
  fclose(stdin);
        ^
0_0_14742242_3015.cpp:168:8: error: expected constructor, destructor, or type conversion before '(' token
  fclose(stdout);
        ^
0_0_14742242_3015.cpp:169:2: error: expected unqualified-id before 'return'
  return 0;
  ^
0_0_14742242_3015.cpp:170:1: error: expected declaration before '}' token
 }
 ^