C语言及程序设计进阶例程-15 指向结构体的指针

贺老师教学链接  C语言及程序设计进阶 本课讲解

指向结构体变量的指针的应用

#include <stdio.h>
#include <string.h>
struct Student
{
    int num;
    char name[12];
    char sex;
    float score;
};
int main( )
{
    struct Student stu;
    stu.num=10301;
    strcpy(stu.name, "Wang Fun");
    stu.sex='f';
    stu.score=89.5;
    struct Student *p=&stu;
    printf("%d %s %c %.1f\n", stu.num, stu.name, stu.sex, stu.score);
    printf("%d %s %c %.1f\n", (*p).num, (*p).name, (*p).sex, (*p).score);
    printf("%d %s %c %.1f\n", p->num, p->name, p->sex, p->score);
    return 0;
}

用指向结构体变量的指针作实参

#include <stdio.h>
#include <string.h>
struct Student
{
    int num;
    char name[12];
    float score[3];
};
void print(struct Student*);
int main( )
{
    struct Student stu,*pt;
    stu.num=12345;
    strcpy(stu.name, "Li Fung");
    stu.score[0]=67.5;
    stu.score[1]=89;
    stu.score[2]=78.5;
    pt=&stu;
    print(pt);
    printf("%d %s ", stu.num, stu.name);
    printf("%.1f %.1f %.1f\n", stu.score[0], stu.score[1], stu.score[2]);
    return 0;
}

void print(struct Student *p)
{
    printf("%d %s ", p->num, p->name);
    printf("%.1f %.1f %.1f\n", p->score[0], p->score[1], p->score[2]);
    p->score[2]=100;
}