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来自「浙江大学计算机学院数据结构课程的教学课件」· HTM 代码 · 共 51 行
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<font face="Arial, Helvetica, sans-serif" size="4"><b><font size="5" color="#FF0033">2. Union</font>
<font color="#0033CC">DEFINITION</font>
<font color="#FF0033">Union ~ Structure</font>
only one field of the union is <font color="#0033CC">"active" </font>at any given time.
<font color="#0033CC"> REPRESENTATION</font>
typedef struct <font color="#FF0033"><i>Sex_type</i></font> {
enum tag_field { female, male} sex;
union {
int children;
int bear;
} u;
};
typedef struct <i><font color="#FF0033">human_being</font></i> {
char name[ 10];
int age;
float salary;
date dob; <i><font size="3" color="#FF0099">/* date of birth day */</font></i>
sex_type sex_info;
};
human_being <i>person1, person2;</i>
<i>person1.sex_info.sex = male;
person1.sex_info.u.bear = FALSE;
person2.sex_info.sex = female;
person2.sex_info.u.children = 4;</i></b></font>
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