那些年我们一起忘掉的C (十六).结构体基础

struct stu
{
   int stuId;
   char name[5];
   int score;
}; 

#include <stdio.h>
#include <string.h>
#define LENGTH 20

void main()
{
	struct stu //定义一个结构体
	{
		int stuid; //包含一个ID属性
		char name[LENGTH]; //包含一个名字属性
		int score; //包含一个分数属性
	}s[5]={ {11,"xiaoming",78},
		{13,"jingjing",88},
		{16,"vivian",98},
		{19,"tony",60},
		{90,"duno",59} }; //创建一个学生结构体数组，并且为这五个学生赋初值
	int i,j,tmpid,tmpscore; //定义几个整型变量，i,j用来进行循环控制，tmpid和tmpscore进行临时值存放
	char tmps[LENGTH]; //进行字符串的临时存放

/*	printf("please input totle 5 students info:\n\n"); //从终端循环读入五个学生的信息，并且保存到前面定义的结构体数组中
	for (i=0;i<5;i++)
	{
		printf("please input the %d student id:\n",i+1);
		scanf("%d",&s[i].stuid); //结构体中属性的正确引用方法，通过.来引用
		printf("please input the %d student name:(less then %d length)\n",i+1,LENGTH);
		scanf("%s",&s[i].name); 
		printf("please input the %d student score:(int type)\n",i+1);
		scanf("%d",&s[i].score);
	}     
*/
	printf("\nThe totle 5 students info are:\n%10s%20s%10s\n","stuid","name","score"); //使用格式化输出可以让信息以更友好的方式展示
	for (i=0;i<5;i++) printf("%10d%20s%10d\n",s[i].stuid,s[i].name,s[i].score); //使用格式化输出可以让信息以更友好的方式展示

	printf("\nAll student info whos score above 80 are:\n%10s%20s%10s\n","stuid","name","score");
	for (i=0;i<5;i++) if (s[i].score > 80) printf("%10d%20s%10d\n",s[i].stuid,s[i].name,s[i].score); //判断，分数大于80，进行打印
	
	for (i=0;i<4;i++) //使用冒泡排序的思想基于分数进行排序
	{
		for(j=i+1;j<5;j++) 
		{
			if(s[i].score < s[j].score) 
			{
				tmpid=s[i].stuid;
				s[i].stuid=s[j].stuid;
				s[j].stuid=tmpid;
	
				strcpy(tmps,s[i].name);
				strcpy(s[i].name,s[j].name);
				strcpy(s[j].name,tmps);
	
				tmpscore=s[i].score;
				s[i].score=s[j].score;
				s[j].score=tmpscore;
			}
		}
	}
	printf("\nAll student sort resault base on score are:\n%10s%20s%10s\n","stuid","name","score");
	for (i=0;i<5;i++) printf("%10d%20s%10d\n",s[i].stuid,s[i].name,s[i].score); 

}