C經典結構圖初始化三種方式

#include<stdio.h>#include<stdlib.h>#include<string.h>intmain(intargc,constchar*argv[]){//1structStudent{intage;intgrade;charname[21];}stu;stu.age=20;stu.grade=3;strcpy(stu.name,"佔上風");printf("%s\n",stu.name);printf("%ld\n",sizeof(stu.name));//=21,值得是空間//utf-8一個漢字佔三個位元組printf("%ld\n",strlen(stu.name));//=9printf("\n\n");//-2----------structStudentstu2={22,3,"lishi"};printf("%s\n",stu2.name);printf("%ld\n",sizeof(stu2.name));//=21,值得是空間//printf("%ld\n",strlen(stu2.name));//5printf("\n\n");//-3----structStudentstu3={.name="gogo"};printf("%s\n",stu3.name);return0;}