foo.c: In function 'main':
foo.c:10:9: warning: 'he' is used uninitialized [-Wuninitialized]
   10 |         printf("它们的和为：%d\n",he);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
foo.c:5:15: note: 'he' was declared here
    5 |         int x,he;
      |               ^~

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