运行 ID: 129998

Main.cc:1:1: error: ‘include’ does not name a type; did you mean ‘__has_include’?
 include
 ^~~~~~~
 __has_include
Main.cc: In function ‘int main()’:
Main.cc:5:1: error: ‘cin’ was not declared in this scope
 cin>>a>>b>>c;
 ^~~
Main.cc:5:1: note: suggested alternative: ‘main’
 cin>>a>>b>>c;
 ^~~
 main
Main.cc:7:1: error: ‘cout’ was not declared in this scope
 cout<<"area=";
 ^~~~
Main.cc:8:19: error: ‘ios’ has not been declared
 cout<