#include<stdio.h>
int main()
{struct Student
	{
		int num;
		float score1;
		float score2;
		float score3;
		float all;
		float aver;
	}student1,student2,student3;
    char c;
	printf("                              1.Input\n");
	printf("                              2.Output\n");
	printf("                              3.Order\n");
	printf("                              4.Quit\n");
	c=getchar();
	switch(c)
		{
			case 'i':printf("Please input info of the three students:\n");
	scanf("%d%f%f%f",&student1.num,&student1.score1,&student1.score2,&student1.score3);
	scanf("%d%f%f%f",&student2.num,&student2.score1,&student2.score2,&student2.score3);
	scanf("%d%f%f%f",&student3.num,&student3.score1,&student3.score2,&student3.score3);
	student1.all = student1.score1 + student1.score2 + student1.score3;
	student1.aver=student1.all/3;
	student2.all = student2.score1 + student2.score2 + student2.score3;
	student2.aver=student2.all/3;
	student3.all = student3.score1 + student3.score2 + student3.score3;
	student3.aver=student3.all/3;
	printf("%d %.1f %.1f\n",student3.num,student3.all,student3.aver);
	printf("%d %.1f %.1f\n",student1.num,student1.all,student1.aver);
	printf("%d %.1f %.1f\n",student2.num,student2.all,student2.aver);
	
	break; 
			case 'o':printf("You are trying to Output info");break;
			case 'm':printf("You are trying to Make things ordered");break;
			case 'q':printf("You are about to Quit");break;
			default:printf("Wrong input");break;
		}
}