/in/foo.cc: In function 'int main()':
/in/foo.cc:23:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   23 |     scanf("%d",&t);
      |     ~~~~~^~~~~~~~~
/in/foo.cc:26:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   26 |         scanf("%d%*c",&n);
      |         ~~~~~^~~~~~~~~~~~
/in/foo.cc:29:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   29 |             scanf("%s%s%d",f[i].name,f[i].space,&f[i].num);
      |             ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~