/in/foo.c: In function 'main':
/in/foo.c:7:1: error: expected ',' or ';' before 'scanf'
 scanf("%d",&n);
 ^~~~~
/in/foo.c:8:15: warning: statement with no effect [-Wunused-value]
  for(i=1;i++;i<=n){
              ~^~~
/in/foo.c:10:1: error: expected ';' before 'printf'
 printf("&d\n",sum)}
 ^~~~~~
/in/foo.c:11:11: error: expected ';' before '}' token
  return 0 }
           ^