/in/foo.cc: In function 'int main()':
/in/foo.cc:5:10: error: expected initializer before '.' token
     int n.m=0;
          ^
/in/foo.cc:6:10: error: 'n' was not declared in this scope
     cin>>n;
          ^
/in/foo.cc:8:9: error: 'm' was not declared in this scope
         m+=n*i+1;
         ^
/in/foo.cc:10:11: error: 'm' was not declared in this scope
     cout<<m;
           ^