foo.c: In function 'Num':
foo.c:3:5: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
    3 | {   if(n==2)
      |     ^~
foo.c:5:2: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
    5 |  for(int x=2;x<n;x++)
      |  ^~~
foo.c: In function 'main':
foo.c:15:9: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   15 |      do{scanf("%d",&n);}
      |         ^~~~~~~~~~~~~~

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