foo.c: In function 'main':
foo.c:5:24: warning: unused variable 't' [-Wunused-variable]
  int i,j=0,n,k,a[1000],t;
                        ^
foo.c:6:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d",&n,&k);
  ^~~~~~~~~~~~~~~~~~~
foo.c:8:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&a[i]);
   ^~~~~~~~~~~~~~~~~
foo.c:28:8: warning: 'index' may be used uninitialized in this function [-Wmaybe-uninitialized]
  a[j]=a[index];
        ^
foo.c:22:19: note: 'index' was declared here
  int t,i,min=a[j],index;
                   ^~~~~
foo.c: In function 'min':
foo.c:28:8: warning: 'index' may be used uninitialized in this function [-Wmaybe-uninitialized]
  a[j]=a[index];
        ^

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