View Compilation Error

0_0_22149117_26099.cpp: In function 'int main()':
0_0_22149117_26099.cpp:7:2: error: expected ',' or ';' before 'for'
  for(;cin>>n;)
  ^
0_0_22149117_26099.cpp:7:14: error: expected primary-expression before ')' token
  for(;cin>>n;)
              ^