/in/foo.c: In function 'main':
/in/foo.c:7:23: error: invalid suffix "；i" on integer constant
    7 |            for(int i =1；i<=n;i++)
      |                       ^~~~
/in/foo.c:7:34: error: expected ';' before ')' token
    7 |            for(int i =1；i<=n;i++)
      |                                  ^
      |                                  ;
/in/foo.c:9:20: error: 'sum' undeclared (first use in this function)
    9 |                    sum=sum+fact;}
      |                    ^~~
/in/foo.c:9:20: note: each undeclared identifier is reported only once for each function it appears in