foo.c: In function 'main':
foo.c:7:17: warning: format '%d' expects a matching 'int *' argument [-Wformat=]
    7 |         scanf("%d%d,&x1,&x2");
      |                ~^
      |                 |
      |                 int *
foo.c:7:19: warning: format '%d' expects a matching 'int *' argument [-Wformat=]
    7 |         scanf("%d%d,&x1,&x2");
      |                  ~^
      |                   |
      |                   int *
foo.c:14:16: warning: too many arguments for format [-Wformat-extra-args]
   14 |         printf("&d\n %d\n %d",y1,y2,y3);
      |                ^~~~~~~~~~~~~~
foo.c:10:11: warning: 'x1' is used uninitialized [-Wuninitialized]
   10 |         y1=x1+x2;
      |         ~~^~~~~~
foo.c:10:11: warning: 'x2' is used uninitialized [-Wuninitialized]

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