foo.c: In function 'main':
foo.c:47:26: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long long int' [-Wformat=]
   47 |    if(op[1]==1) printf("%d\n",op[0]);
      |                         ~^    ~~~~~
      |                          |      |
      |                          int    long long int
      |                         %lld
foo.c:48:18: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long long int' [-Wformat=]
   48 |    else printf("%d/%d\n",op[0],op[1]);
      |                 ~^       ~~~~~
      |                  |         |
      |                  int       long long int
      |                 %lld
foo.c:48:21: warning: format '%d' expects argument of type 'int', but argument 3 has type 'long long int' [-Wformat=]
   48 |    else printf("%d/%d\n",op[0],op[1]);
      |                    ~^          ~~~~~
      |                     |            |
      |                     int          long long int
      |                    %lld
foo.c:59:26: warning: format '%lld' expects a matching 'long long int' argument [-Wformat=]
   59 |    if(no==1) printf("[%lld],op[0]");
      |                       ~~~^
      |                          |
      |                          long long int
foo.c:19:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   19 |   scanf(" %s",s);
      |   ^~~~~~~~~~~~~~

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