Main.cc: In function 'int main()':
Main.cc:8:13: warning: init-statement in selection statements only available with '-std=c++17' or '-std=gnu++17' [-Wc++17-extensions]
    8 |         if ((year % 4 == 0 && year % 100 != 0) || (year % 400 == 0) {
      |             ^
Main.cc:8:68: error: expected ';' before '{' token
    8 |         if ((year % 4 == 0 && year % 100 != 0) || (year % 400 == 0) {
      |                                                                    ^~
      |                                                                    ;
Main.cc:8:48: warning: statement has no effect [-Wunused-value]
    8 |         if ((year % 4 == 0 && year % 100 != 0) || (year % 400 == 0) {
      |             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~
Main.cc:11:9: error: expected primary-expression before 'else'
   11 |         else cout<<"No"<<endl;
      |         ^~~~
Main.cc:10:10: error: expected ')' before 'else'
   10 |         }
      |          ^
      |          )
   11 |         else cout<<"No"<<endl;
      |         ~~~~
Main.cc:8:12: note: to match this '('
    8 |         if ((year % 4 == 0 && year % 100 != 0) || (year % 400 == 0) {
      |            ^