foo.c: In function 'main':
foo.c:5:13: warning: format '%d' expects argument of type 'int *', but argument 2 has type 'long long int *' [-Wformat=]
    5 |     scanf("%d%d",&a,&b);
      |            ~^    ~~
      |             |    |
      |             |    long long int *
      |             int *
      |            %lld
foo.c:5:15: warning: format '%d' expects argument of type 'int *', but argument 3 has type 'long long int *' [-Wformat=]
    5 |     scanf("%d%d",&a,&b);
      |              ~^     ~~
      |               |     |
      |               int * long long int *
      |              %lld
foo.c:6:14: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long long int' [-Wformat=]
    6 |     printf("%d\n",a+b);
      |             ~^    ~~~
      |              |     |
      |              int   long long int
      |             %lld
foo.c:5:5: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
    5 |     scanf("%d%d",&a,&b);
      |     ^~~~~~~~~~~~~~~~~~~

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