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:6:9: warning: integer constant is so large that it is unsigned
    6 |  if(a+b>9223372036854775808)
      |         ^~~~~~~~~~~~~~~~~~~
foo.c:7:12: warning: format '%d' expects argument of type 'int', but argument 2 has type 'char *' [-Wformat=]
    7 |   printf("%d\n","18446744073709551616");
      |           ~^    ~~~~~~~~~~~~~~~~~~~~~~
      |            |    |
      |            int  char *
      |           %s
foo.c:9:12: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long long int' [-Wformat=]
    9 |   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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