foo.c: In function 'main':
foo.c:7:12: warning: format '%d' expects argument of type 'int', but argument 2 has type 'int *' [-Wformat=]
   printf("%d\n",&z);
           ~^    ~~
           %ls
foo.c:6:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d",&x,&y);
   ^~~~~~~~~~~~~~~~~~~
foo.c:5:6: warning: 'x' is used uninitialized in this function [-Wuninitialized]
   z=x*y;
     ~^~
foo.c:5:6: warning: 'y' is used uninitialized in this function [-Wuninitialized]

[Hydro](https://hydro.ac)提供评测服务