foo.cc: In function 'int main()':
foo.cc:23:71: warning: format '%f' expects argument of type 'float*', but argument 5 has type 'int*' [-Wformat=]
   scanf("%d %s %s %f",&rec[i].id,rec[i].name,rec[i].phone,&rec[i].secs);
                                                           ~~~~~~~~~~~~^
foo.cc:37:10: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   if(flag=0)
      ~~~~^~
foo.cc:23:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %s %s %f",&rec[i].id,rec[i].name,rec[i].phone,&rec[i].secs);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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