C语言结构体跟指针使用

3/8/2017来源:ASP.NET技巧人气:420

//person结构体,姓名,年龄,身高,体重 //打印结构体值,增加20后再打印,用函数 #include <stdio.h> #include <assert.h> #include <string.h> #include <stdlib.h> typedef struct   {        char *name;     int age;     int height;     int weight; }Person;      //结构体数据赋值 Person *person_create(char *name, int age, int height, int weight) {     Person *who = malloc(sizeof(Person));     assert(who != NULL);          //strncpy(who->name, name, strlen(name)+1);     who->name = strdup(name);     who->age = age;     who->height = height;     who->weight = weight;     return who; } void person_destroy(Person *who) {     free(who->name);     free(who); } //打印结构体的值 void person_PRint(Person *who) {     printf("name is %s\n", who->name);     printf("age is %d\n", who->age);     printf("height is %d\n", who->height);     printf("weight is %d\n", who->weight); } //主函数 int main(int argc, char *argv[]) {     Person *xia = person_create("xia", 20, 170, 120);     Person de = {"de", 20, 170, 120};     person_print(&de);     printf("---\n");          person_print(xia);     xia->age += 2;     xia->height += 20;     xia->weight += 20;     printf("---\n");     person_print(xia);     person_destroy(xia);     return 0; }