foo.cc: In function 'int main()':
foo.cc:29:10: warning: format '%s' expects argument of type 'char*', but argument 2 has type 'char (*)[150]' [-Wformat=]
   29 |  scanf("%s%s",&s1,&s2);
      |         ~^    ~~~
      |          |    |
      |          |    char (*)[150]
      |          char*
foo.cc:29:12: warning: format '%s' expects argument of type 'char*', but argument 3 has type 'char (*)[150]' [-Wformat=]
   29 |  scanf("%s%s",&s1,&s2);
      |           ~^      ~~~
      |            |      |
      |            char*  char (*)[150]
foo.cc:29:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   29 |  scanf("%s%s",&s1,&s2);
      |  ~~~~~^~~~~~~~~~~~~~~~

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