C语言结构体

#include <stdio.h>
#include <string.h>
#include <stdlib.h>//struct Student_s {
//	int num;
//	char name[20];
//	char gender;
//	int age;
//	float Chinese;
//	float Math;
//	float English;
//	char addr[30];
//};
//最后的分号一定要写！！！！！！//typedef struct Student_s Student_t;
//typedef struct Student_s* pStudent_t;//下面的结构体定义方式更常用！
typedef struct{int num;char name[20];char gender;int age;float Chinese;float Math;float English;char addr[30];
} Student_t, *pStudent_t;int main() {//结构体赋值，所有的数据成员都拷贝了一份//struct Student_s stu1 = {1001, "Wuyifan", 'M', 30, 75, 70, 100, "Canada"};//struct Student_s stu2;//stu2 = stu1;//结构体数组Student_t stu[3] = {1001,"Wuyifan",'M',30,75,70,100,"Canada",1003,"Zhaowei",'F',45,80,85,70,"Anhui",1005,"Sunhonglei",'M',50,90,90,60,"Heilongjiang"};//从标准输入读取数据，给数据成员赋值//for (int i = 0; i < 3; ++i) {//  %c前面加上空格，表示忽略前置空白字符//	scanf("%d%s %c%d%f%f%f%s",//		&stu[i].num, stu[i].name, &stu[i].gender, &stu[i].age,//		&stu[i].Chinese, &stu[i].Math, &stu[i].English, stu[i].addr);//}//结构体指针pStudent_t p = stu;printf("(*p).num = %d\n", (*p).num);//*比. 优先级更低，所以需要加括号// -> 和 (*).等价printf("p->num = %d\n", p->num);//和上一个是等价的int num = p->num++;printf("num = %d, p->num = %d\n", num, p->num);num = p++->num;printf("num = %d, p->num = %d\n", num, p->num);num = ++p->num;printf("num = %d, p->num = %d\n", num, p->num);
}