/in/foo.cc: In function 'int main()':
/in/foo.cc:16:4: error: 'cout' was not declared in this scope
    cout<<i<<" ";
    ^~~~
/in/foo.cc:17:4: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
    if(k%5==0);
    ^~
/in/foo.cc:18:4: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
    {
    ^
/in/foo.cc:19:11: error: 'endl' was not declared in this scope
     cout<<endl;
           ^~~~