foo.c: In function 'cj':
foo.c:5:12: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
    5 |     if(n>2 && !(n%2==1) || n<2)
      |        ~~~~^~~~~~~~~~~~
foo.c: In function 'main':
foo.c:15:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   15 |  scanf("%d",&n);
      |  ^~~~~~~~~~~~~~

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