C语言结构体跟指针使用

2019-11-06 06:04:04

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//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;}

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