/in/foo.cc:1:2: error: invalid preprocessing directive #Include
 #Include<iostream>
  ^~~~~~~
/in/foo.cc: In function 'int main()':
/in/foo.cc:7:2: error: 'cout' was not declared in this scope
  cout<<"请输入原来的赞数："+a<<endl;
  ^~~~
/in/foo.cc:7:41: error: 'endl' was not declared in this scope
  cout<<"请输入原来的赞数："+a<<endl;
                                         ^~~~