View Compilation Error

0_0_27816502_26328.cpp: In function 'int main()':
0_0_27816502_26328.cpp:12:6: error: expected primary-expression before 'long'
   a-=long long int (a);
      ^
0_0_27816502_26328.cpp:15:7: error: expected primary-expression before 'long'
   ans=long long int(a)%10;
       ^