/in/foo.c: In function 'main':
/in/foo.c:7:15: error: invalid suffix "；" on integer constant
    7 |          flog=1；}
      |               ^~~
/in/foo.c:7:18: error: expected ';' before '}' token
    7 |          flog=1；}
      |                  ^
      |                  ;
/in/foo.c:8:24: error: lvalue required as left operand of assignment
    8 |          else if(n=2||n=3){
      |                        ^
/in/foo.c:14:9: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   14 |      if(flog=1){
      |         ^~~~
/in/foo.c:16:13: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   16 |          if(flog=0){
      |             ^~~~
/in/foo.c: At top level:
/in/foo.c:21:5: error: expected identifier or '(' before 'return'
   21 |     return 0;
      |     ^~~~~~