运行 ID: 79686

Main.cc:5:5: error: ‘cout’ does not name a type
     cout<<"abc is substring of dddncabca";
     ^~~~
Main.cc:6:5: error: expected unqualified-id before ‘return’
     return result;
     ^~~~~~
Main.cc:7:1: error: expected declaration before ‘}’ token
 }
 ^