foo.c: In function 'main':
foo.c:5:2: warning: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
    5 |  scanf("%d", &n);
      |  ^~~~~
foo.c:5:2: warning: incompatible implicit declaration of built-in function 'scanf'
foo.c:1:1: note: include '<stdio.h>' or provide a declaration of 'scanf'
  +++ |+#include <stdio.h>
    1 | int main()
foo.c:8:12: warning: implicit declaration of function 'malloc' [-Wimplicit-function-declaration]
    8 |  a = (int*)malloc(sizeof(int) * n);
      |            ^~~~~~
foo.c:8:12: warning: incompatible implicit declaration of built-in function 'malloc'
foo.c:1:1: note: include '<stdlib.h>' or provide a declaration of 'malloc'
  +++ |+#include <stdlib.h>
    1 | int main()
foo.c:30:6: warning: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
   30 |      printf("%d ", (a[i] + i - v)/2+1);
      |      ^~~~~~
foo.c:30:6: warning: incompatible implicit declaration of built-in function 'printf'
foo.c:30:6: note: include '<stdio.h>' or provide a declaration of 'printf'

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