foo.cc: In function 'int main()':
foo.cc:47:32: error: cannot convert 'ST' to 'char*' for argument '1' to 'char* strcpy(char*, const char*)'
    strcpy(st[index],rec[k].name);
                                ^
foo.cc:31:11: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
      scanf("%d%s%s%d",&rec[i].id,rec[i].name,rec[i].phone,&rec[i].secs);
      ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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