foo.c: In function 'main':
foo.c:4:17: warning: unused variable 't' [-Wunused-variable]
    4 |  int x,s,n1=0,i,t;
      |                 ^
foo.c:6:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
    6 |  scanf("%d",&x);
      |  ^~~~~~~~~~~~~~

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