foo.c: In function 'main':
foo.c:15:9: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[50]' [-Wformat=]
   15 | scanf("%s%d%d %c %c %d",&a[i].name,&a[i].data,
      |        ~^               ~~~~~~~~~~
      |         |               |
      |         char *          char (*)[50]
foo.c:13:4: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   13 |    scanf("%d",&n);
      |    ^~~~~~~~~~~~~~
foo.c:15:1: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   15 | scanf("%s%d%d %c %c %d",&a[i].name,&a[i].data,
      | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   16 | &a[i].pin,&a[i].a1,&a[i].a2,&a[i].wen);
      | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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