foo.c: In function 'main':
foo.c:6:17: warning: format '%d' expects argument of type 'int *', but argument 2 has type 'int' [-Wformat=]
    6 |         scanf("%d",x);
      |                ~^  ~
      |                 |  |
      |                 |  int
      |                 int *
foo.c:6:9: warning: 'x' is used uninitialized [-Wuninitialized]
    6 |         scanf("%d",x);
      |         ^~~~~~~~~~~~~
foo.c:5:13: note: 'x' was declared here
    5 |         int x,x1=2,x2,i;
      |             ^
foo.c:14:19: warning: 'i' may be used uninitialized [-Wmaybe-uninitialized]
   14 |                 if(i>n)
      |                   ^
foo.c:5:23: note: 'i' was declared here
    5 |         int x,x1=2,x2,i;
      |                       ^

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