foo.c: In function 'main':
foo.c:20:3: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
   20 |   if(n==1)
      |   ^~
foo.c:22:4: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
   22 |    n/=10;
      |    ^
foo.c:6:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
    6 |  scanf("%d",&a);
      |  ^~~~~~~~~~~~~~

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