foo.cc: In function 'int main()':
foo.cc:16:9: warning: format '%s' expects argument of type 'char*', but argument 2 has type 'char (*)[50]' [-Wformat=]
   16 | scanf("%s%d%d %c %c %d",&a[i].name,&a[i].data,
      |        ~^               ~~~~~~~~~~
      |         |               |
      |         char*           char (*)[50]
foo.cc:14:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   14 |    scanf("%d",&n);
      |    ~~~~~^~~~~~~~~
foo.cc:16:6: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   16 | scanf("%s%d%d %c %c %d",&a[i].name,&a[i].data,
      | ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   17 | &a[i].pin,&a[i].a1,&a[i].a2,&a[i].wen);
      | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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