Main.cc:3:5: error: cannot declare '::main' to be a global variable
    3 | int main{
      |     ^~~~
Main.cc:4:27: error: expected '}' before ';' token
    4 |         cout<< 2833.290502;
      |                           ^
Main.cc:3:9: note: to match this '{'
    3 | int main{
      |         ^
Main.cc:4:13: error: invalid user-defined conversion from 'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} to 'int' [-fpermissive]
    4 |         cout<< 2833.290502;
      |         ~~~~^~~~~~~~~~~~~~
In file included from /usr/include/c++/12.2.1/ios:44,
                 from /usr/include/c++/12.2.1/ostream:38,
                 from /usr/include/c++/12.2.1/iostream:39,
                 from Main.cc:1:
/usr/include/c++/12.2.1/bits/basic_ios.h:117:16: note: candidate is: 'std::basic_ios<_CharT, _Traits>::operator bool() const [with _CharT = char; _Traits = std::char_traits<char>]' (near match)
  117 |       explicit operator bool() const
      |                ^~~~~~~~
/usr/include/c++/12.2.1/bits/basic_ios.h:117:16: note:   return type 'bool' of explicit conversion function cannot be converted to 'int' with a qualification conversion
Main.cc:5:5: error: expected unqualified-id before 'return'
    5 |     return 0;
      |     ^~~~~~
Main.cc:6:1: error: expected declaration before '}' token
    6 | }
      | ^