View Compilation Error

0_0_27898615_28520.cpp: In function 'int main()':
0_0_27898615_28520.cpp:6:5: error: 'doubel' was not declared in this scope
     doubel a;
     ^
0_0_27898615_28520.cpp:7:16: error: 'a' was not declared in this scope
     while(cin>>a)
                ^