View Compilation Error

0_0_28262562_5389.cpp: In function 'int main()':
0_0_28262562_5389.cpp:20:5: error: 'nbsp' was not declared in this scope
       }
     ^
0_0_28262562_5389.cpp:21:5: error: 'nbsp' was not declared in this scope
       printf("%d",q.top());//最有一个数字没有空格。
     ^
0_0_28262562_5389.cpp: At global scope:
0_0_28262562_5389.cpp:29:2: error: expected unqualified-id before 'while'
  while(scanf("%d %d",&n,&t)&&(n!=0||t!=0))
  ^