/in/foo.cc: In function 'int main()':
/in/foo.cc:5:17: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'int' [-Wformat=]
    5 |         scanf("%d%d",a,b);
      |                ~^    ~
      |                 |    |
      |                 int* int
/in/foo.cc:5:19: warning: format '%d' expects argument of type 'int*', but argument 3 has type 'int' [-Wformat=]
    5 |         scanf("%d%d",a,b);
      |                  ~^    ~
      |                   |    |
      |                   int* int
/in/foo.cc:5:14: warning: 'a' is used uninitialized [-Wuninitialized]
    5 |         scanf("%d%d",a,b);
      |         ~~~~~^~~~~~~~~~~~
/in/foo.cc:4:13: note: 'a' was declared here
    4 |         int a,b;
      |             ^
/in/foo.cc:5:14: warning: 'b' is used uninitialized [-Wuninitialized]
    5 |         scanf("%d%d",a,b);
      |         ~~~~~^~~~~~~~~~~~
/in/foo.cc:4:15: note: 'b' was declared here
    4 |         int a,b;
      |               ^