/in/foo.c: In function 'main':
/in/foo.c:6:17: warning: format '%d' expects argument of type 'int *', but argument 2 has type 'int' [-Wformat=]
    6 |         scanf("%d %d",a,b);
      |                ~^     ~
      |                 |     |
      |                 int * int
/in/foo.c:6:20: warning: format '%d' expects argument of type 'int *', but argument 3 has type 'int' [-Wformat=]
    6 |         scanf("%d %d",a,b);
      |                   ~^    ~
      |                    |    |
      |                    |    int
      |                    int *
/in/foo.c:6:9: warning: 'a' is used uninitialized [-Wuninitialized]
    6 |         scanf("%d %d",a,b);
      |         ^~~~~~~~~~~~~~~~~~
/in/foo.c:5:8: note: 'a' was declared here
    5 |    int a,b;
      |        ^
/in/foo.c:6:9: warning: 'b' is used uninitialized [-Wuninitialized]
    6 |         scanf("%d %d",a,b);
      |         ^~~~~~~~~~~~~~~~~~
/in/foo.c:5:10: note: 'b' was declared here
    5 |    int a,b;
      |          ^