foo.c: In function 'main':
foo.c:7:9: warning: assignment to 'int *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
    7 |     p[1]=1;
      |         ^
foo.c:8:12: warning: initialization of 'int *' from incompatible pointer type 'int **' [-Wincompatible-pointer-types]
    8 |     int *j=p;
      |            ^
foo.c:9:9: warning: unused variable 'i' [-Wunused-variable]
    9 |     int i=*(j++);
      |         ^

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