foo.cc: In function 'int main()':
foo.cc:20:30: warning: format '%d' expects argument of type 'int', but argument 2 has type 'double' [-Wformat=]
  printf("%d\n",(1.2*bank)+pre);
                ~~~~~~~~~~~~~~^
foo.cc:6:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&a[i]);
   ~~~~~^~~~~~~~~~~~

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