foo.cc: In function 'int main()':
foo.cc:11:17: warning: format '%s' expects argument of type 'char*', but argument 2 has type 'int*' [-Wformat=]
   11 |         scanf("%s",a[b[j]]);
      |                ~^  ~~~~~~~
      |                 |        |
      |                 char*    int*
      |                %d
foo.cc:14:18: warning: format '%s' expects argument of type 'char*', but argument 2 has type 'int*' [-Wformat=]
   14 |         printf("%s\n",a[j]);
      |                 ~^    ~~~~
      |                  |       |
      |                  char*   int*
      |                 %n
foo.cc:5:15: warning: unused variable 'k' [-Wunused-variable]
    5 |     int i=0,j,k;
      |               ^
foo.cc:8:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    8 |         scanf("%d",&b[i++]);
      |         ~~~~~^~~~~~~~~~~~~~
foo.cc:11:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   11 |         scanf("%s",a[b[j]]);
      |         ~~~~~^~~~~~~~~~~~~~

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