运行 ID: 37150

Main.cc:3:7: error: expected nested-name-specifier before ‘namespac’
 using namespac std;
       ^~~~~~~~
Main.cc: In function ‘int main()’:
Main.cc:7:2: error: expected initializer before ‘int’
  int len,position;
  ^~~
Main.cc:9:7: error: ‘s’ was not declared in this scope
  gets(s);
       ^
Main.cc:10:2: error: ‘len’ was not declared in this scope
  len=strlen(s);
  ^~~
Main.cc:10:2: note: suggested alternative: ‘mblen’
  len=strlen(s);
  ^~~
  mblen
Main.cc:18:3: error: ‘cout’ was not declared in this scope
   cout<<"yes"<& __os)
     ^~~~
Main.cc:21:3: error: ‘cout’ was not declared in this scope
   cout<<"no"<& __os)
     ^~~~