/in/foo.c: In function 'main':
/in/foo.c:6:24: error: invalid suffix "；" on integer constant
    6 |         int sum=0,fact=1；
      |                        ^~~
/in/foo.c:7:9: error: expected ',' or ';' before 'scanf'
    7 |         scanf("%d",&n);
      |         ^~~~~
/in/foo.c:8:22: error: expected '=', ',', ';', 'asm' or '__attribute__' before '<=' token
    8 |         for(int i=1,i<=n,i++)
      |                      ^~
/in/foo.c:14:9: error: expected expression before 'return'
   14 |         return 0;
      |         ^~~~~~
/in/foo.c:15:1: error: expected expression before '}' token
   15 | }
      | ^
/in/foo.c:8:17: warning: unused variable 'i' [-Wunused-variable]
    8 |         for(int i=1,i<=n,i++)
      |                 ^
/in/foo.c:6:19: warning: unused variable 'fact' [-Wunused-variable]
    6 |         int sum=0,fact=1；
      |                   ^~~~
/in/foo.c:5:9: warning: unused variable 'n' [-Wunused-variable]
    5 |     int n;
      |         ^