foo.cc: In function 'int main()':
foo.cc:7:13: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long long int' [-Wformat=]
    7 |    printf("%d",(i*b+1)/a);
      |            ~^  ~~~~~~~~~
      |             |         |
      |             int       long long int
      |            %lld
foo.cc:4:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    4 |  scanf("%lld%lld",&a,&b);
      |  ~~~~~^~~~~~~~~~~~~~~~~~

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