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:15:17: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
   15 |                 if(i>n)
      |                 ^~
foo.c:17:25: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
   17 |                         printf("%d+%d=%d\n",x1,x2,x);
      |                         ^~~~~~
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:15:19: warning: 'i' may be used uninitialized [-Wmaybe-uninitialized]
   15 |                 if(i>n)
      |                   ^
foo.c:5:23: note: 'i' was declared here
    5 |         int x,x1=2,x2,i;
      |                       ^
foo.c:17:25: warning: 'x2' may be used uninitialized [-Wmaybe-uninitialized]
   17 |                         printf("%d+%d=%d\n",x1,x2,x);
      |                         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
foo.c:5:20: note: 'x2' was declared here
    5 |         int x,x1=2,x2,i;
      |                    ^~

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