foo.cc: In function ‘int main()’:
foo.cc:16:20: warning: init-statement in selection statements only available with ‘-std=c++17’ or ‘-std=gnu++17’ [-Wc++17-extensions]
   16 |                 if(c<a）
      |                    ^
foo.cc:16:22: error: ‘a）’ was not declared in this scope
   16 |                 if(c<a）
      |                      ^~~
foo.cc:18:17: error: expected primary-expression before ‘else’
   18 |                 else
      |                 ^~~~
foo.cc:17:50: error: expected ‘)’ before ‘else’
   17 |                    cout<<b<<"<"<<a<<"<"<<c<<endl;
      |                                                  ^
      |                                                  )
   18 |                 else
      |                 ~~~~                              
foo.cc:16:19: note: to match this ‘(’
   16 |                 if(c<a）
      |                   ^
foo.cc:5:19: warning: unused variable ‘min’ [-Wunused-variable]
    5 |         int a,b,c,min;
      |                   ^~~