/in/foo.c: In function 'main':
/in/foo.c:7:13: error: 'c\U0000ff09' undeclared (first use in this function)
    7 |     if((a+b>c）&&(a+c>b)&&(b+c>a))
      |             ^~~
/in/foo.c:7:13: note: each undeclared identifier is reported only once for each function it appears in
/in/foo.c:7:35: error: expected ')' before '{' token
    7 |     if((a+b>c）&&(a+c>b)&&(b+c>a))
      |       ~                           ^
      |                                   )
    8 | {
      | ~                                  
/in/foo.c:16:1: error: expected expression before '}' token
   16 | }
      | ^
/in/foo.c:5:17: warning: unused variable 'perimeter' [-Wunused-variable]
    5 |     float a,b,c,perimeter;
      |                 ^~~~~~~~~