【已解决】error: call of overloaded ‘abs(unsigned int)’ is ambiguous
问题描述：error: call of overloaded ‘abs(unsigned int)’ is ambiguousunsigned int dist = abs(goal_x - tmp_goal_x) + abs(goal_y - tmp_goal_y);解决办法：修改为：unsigned int dist = abs(int(goal_x - tmp_goal_x)) + abs(
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问题描述：
error: call of overloaded ‘abs(unsigned int)’ is ambiguous
unsigned int dist = abs(goal_x - tmp_goal_x) + abs(goal_y - tmp_goal_y);
解决办法：
修改为：
unsigned int dist = abs(int(goal_x - tmp_goal_x)) + abs(int(goal_y - tmp_goal_y));
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