/in/foo.c: In function 'main':
/in/foo.c:7:11: warning: format '%ld' expects argument of type 'long int *', but argument 2 has type 'double *' [-Wformat=]
  scanf("%ld %ld",&a,&b)；
           ^
/in/foo.c:7:15: warning: format '%ld' expects argument of type 'long int *', but argument 3 has type 'double *' [-Wformat=]
  scanf("%ld %ld",&a,&b)；
               ^
/in/foo.c:7:24: error: stray '\357' in program
  scanf("%ld %ld",&a,&b)；
                        ^
/in/foo.c:7:25: error: stray '\274' in program
  scanf("%ld %ld",&a,&b)；
                         ^
/in/foo.c:7:26: error: stray '\233' in program
  scanf("%ld %ld",&a,&b)；
                          ^
/in/foo.c:8:3: error: expected ';' before 'printf'
   printf("%ld",a+b);
   ^~~~~~