foo.cc: In function 'int main()':
foo.cc:9:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    9 |  scanf("%d %d",&d,&h);//C语言格式输入 "空格 " 表示输入要用"空格" 隔开
      |  ~~~~~^~~~~~~~~~~~~~~

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