foo.cc: In function 'int main()':
foo.cc:5:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    5 |     scanf("%d",&x);
      |     ~~~~~^~~~~~~~~
foo.cc:4:13: warning: 'j' may be used uninitialized in this function [-Wmaybe-uninitialized]
    4 |     int x,i,j,max;
      |             ^

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