union的变量共用内存.

#include <stdio.h>typedef struct Leix{char profession;//职业int height;union{int score ;char* course;};
}Leix;int main(){/*初始化student*/Leix student={'t',171,90};/*初始化teacher*/Leix teacher;teacher.profession='t';teacher.course="Chinese";teacher.score=91;printf("teacher profession:%c,course=%s,score=%d",teacher.profession,teacher.course,teacher.score);return 0;
}