/in/foo.c: In function 'main':
/in/foo.c:6:30: error: 'a\U0000ff09' undeclared (first use in this function)
    6 |         if(a+b>c&&a+c>b&&b+c>a）{
      |                              ^~~
/in/foo.c:6:30: note: each undeclared identifier is reported only once for each function it appears in
/in/foo.c:6:33: error: expected ')' before '{' token
    6 |         if(a+b>c&&a+c>b&&b+c>a）{
      |           ~                     ^
      |                                 )
/in/foo.c:13:1: error: expected expression before '}' token
   13 | }
      | ^