foo.c: In function 'main':
foo.c:6:12: warning: unused variable 't' [-Wunused-variable]
    6 |  int n,i,j,t,k=0,a[10001];
      |            ^
foo.c:6:10: warning: unused variable 'j' [-Wunused-variable]
    6 |  int n,i,j,t,k=0,a[10001];
      |          ^
foo.c: In function 'select':
foo.c:16:10: warning: unused variable 'k' [-Wunused-variable]
   16 |  int i,j,k,t=0,m,q=0;
      |          ^
foo.c: In function 'main':
foo.c:7:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
    7 |  scanf("%d",&n);
      |  ^~~~~~~~~~~~~~
foo.c:9:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
    9 |   scanf("%d",&a[i]);
      |   ^~~~~~~~~~~~~~~~~

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