enrollment_management/README.md

步骤1
int main()
{
    char controll;
    char arr1[] = { "                              1.Input" };
    char arr2[] = { "                              2.Output" };
    char arr3[] = { "                              3.Order" };
    char arr4[] = { "                              4.Quit" };
    char arr5[] = { "You are trying to Input info" };
    char arr6[] = { "You are trying to Output info" };
    char arr7[] = { "You are trying to Make things ordered" };
    char arr8[] = { "You are about to Quit" };
    printf("%s\n%s\n%s\n%s\n", arr1, arr2, arr3, arr4);
    scanf_s("%c", &controll);
    switch (controll) {
    case 'i':printf("\n%s\n", arr5); break;
    case 'o':printf("\n%s\n", arr6); break;
    case 'm':printf("\n%s\n", arr7); break;
    case 'q':printf("\n%s\n", arr8); break;
        default:printf("Wrong input");
    }
   
}
步骤2
#include <iostream>

int main()
{
	struct student
	{
		int number;
		float gaoshu;
		float dawu;
		float yy;
		float add;
	}student1, student2, student3;
	scanf("%d",&student1.number);
scanf("%f",&student1.gaoshu);
scanf("%f",&student1.dawu);
scanf("%f",&student1.yy);
scanf("%d",&student2.number);
scanf("%f",&student2.gaoshu);
scanf("%f",&student2.dawu);
scanf("%f",&student2.yy);
scanf("%d",&student3.number);
scanf("%f",&student3.gaoshu);
scanf("%f",&student3.dawu);
scanf("%f",&student3.yy);
	student1.add = (student1.gaoshu + student1.dawu + student1.yy);
	student2.add = (student2.gaoshu + student2.dawu + student2.yy);
	student3.add = (student3.gaoshu + student3.dawu + student3.yy);
	printf("%d  %f  %f  %f  %f\n", student1.number, student1.gaoshu, student1.dawu, student1.yy, student1.add);

printf("%d  %f  %f  %f  %f\n", student2.number, student2.gaoshu, student2.dawu, student2.yy, student2.add);

printf("%d  %f  %f  %f  %f\n", student3.number, student3.gaoshu, student3.dawu, student3.yy, student3.add);
}
步骤3
int main()
{
    char controll;
    char arr1[] = { "                              1.Input" };
    char arr2[] = { "                              2.Output" };
    char arr3[] = { "                              3.Order" };
    char arr4[] = { "                              4.Quit" };
    char arr5[] = { "Please input info of the three students:" };
    char arr7[] = { "You are trying to Make things ordered" };
    char arr8[] = { "You are about to Quit" };
    printf("%s\n%s\n%s\n%s\n", arr1, arr2, arr3, arr4);
    scanf_s("%c", &controll);
    switch (controll) {
    case 'i':printf("\n%s\n", arr5); break;
    case 'm':printf("\n%s\n", arr7); break;
    case 'q':printf("\n%s\n", arr8); break;
    default:printf("Wrong input");
    }
            struct student
            {
                int number;
                float gaoshu;
                float dawu;
                float yy;
                float add;
                float aver;
            }student1, student2, student3,studenttemp;
scanf("%d",&student1.number);
scanf("%f",&student1.gaoshu);
scanf("%f",&student1.dawu);
scanf("%f",&student1.yy);
scanf("%d",&student2.number);
scanf("%f",&student2.gaoshu);
scanf("%f",&student2.dawu);
scanf("%f",&student2.yy);
scanf("%d",&student3.number);
scanf("%f",&student3.gaoshu);
scanf("%f",&student3.dawu);
scanf("%f",&student3.yy);
            student1.add = (student1.gaoshu + student1.dawu + student1.yy);
            student2.add = (student2.gaoshu + student2.dawu + student2.yy);
            student3.add = (student3.gaoshu + student3.dawu + student3.yy);
            student1.aver = student1.add / 3;
            student2.aver = student2.add / 3;
            student3.aver = student3.add / 3;
            if (student1.add > student2.add) {
                studenttemp = student1;
                student1 = student2;
                student2 = studenttemp;
         }
            if (student1.add > student3.add) {
                studenttemp = student1;
                student1 = student3;
                student3 = studenttemp;
            }
            if (student2.add > student3.add) {
                studenttemp = student2;
                student2 = student3;
                student3 = studenttemp;
            }
            printf("%d,%.1f,%.1f\n", student1.number, student1.add, student1.aver);
            printf("%d,%.1f,%.1f\n", student2.number, student2.add, student2.aver);
            printf("%d,%.1f,%.1f\n", student3.number, student3.add, student3.aver);
    
   
}