foo.c: In function 'main':
foo.c:43:24: warning: format '%d' expects a matching 'int' argument [-Wformat=]
   43 |    if(no==1) printf("[%d],op[0]");
      |                       ~^
      |                        |
      |                        int
foo.c:11:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   11 |   scanf(" %s",s);
      |   ^~~~~~~~~~~~~~

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