foo.cc:16:24: error: conversion from 'int' to non-scalar type 'Node' requested
   16 | struct Node node[302]={0};
      |                        ^
foo.cc: In function 'int digui_0(int)':
foo.cc:24:9: warning: control reaches end of non-void function [-Wreturn-type]
   24 |  digui_0(node[i].s_index);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~

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