foo.c: In function 'main':
foo.c:8:5: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&y[n]);
     ^~~~~~~~~~~~~~~~~
foo.c:10:3: warning: array subscript is above array bounds [-Warray-bounds]
  y[13]=0;
  ~^~~~

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