foo.cc: In function 'int main()':
foo.cc:6:10: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'long long int*' [-Wformat=]
    6 |  scanf("%d%d", &a, &b);
      |         ~^     ~~
      |          |     |
      |          int*  long long int*
      |         %lld
foo.cc:6:12: warning: format '%d' expects argument of type 'int*', but argument 3 has type 'long long int*' [-Wformat=]
    6 |  scanf("%d%d", &a, &b);
      |           ~^       ~~
      |            |       |
      |            int*    long long int*
      |           %lld
foo.cc:7:14: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long long int' [-Wformat=]
    7 |     printf("%d",a+b);
      |             ~^  ~~~
      |              |   |
      |              int long long int
      |             %lld
foo.cc:6:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    6 |  scanf("%d%d", &a, &b);
      |  ~~~~~^~~~~~~~~~~~~~~~

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