123xj/8.cpp

#include<stdio.h>
#include<string.h>
void Menu()
{
	printf("1.input\n");
	printf("2.delete\n");
	printf("3.select\n");
	printf("4.order\n");
	printf("5.output\n");
	printf("6.quit\n");
	printf("please input your option\n");
}
struct Info
{
	char num[6], name[7];
	int cls;
	float math, phy, eng, sum;
}arr[4], ins, mod;
void Input(int i)
{
	void Option();
	printf("id ");
	scanf("%s", arr[i].num);
	printf("class ");
	scanf("%d", &arr[i].cls);
	printf("name ");
	scanf("%s", arr[i].name);
	printf("score1 ");
	scanf("%f", &arr[i].math);
	printf("score2 ");
	scanf("%f", &arr[i].phy);
	printf("score3 ");
	scanf("%f", &arr[i].eng);
	arr[i].sum = arr[i].math + arr[i].phy + arr[i].eng;
	printf("continue?\n");
	char yon[4];
	scanf("%s", yon);
	if (strcmp(yon, "yes") == 0)
		Input(i + 1);
	else
		Option();
}
void Output(int i)
{
	printf("%s ", arr[i].num);
	printf("%d ", arr[i].cls);
	printf("%s ", arr[i].name);
	printf("%.1f %.1f %.1f ", arr[i].math, arr[i].phy, arr[i].eng);
	printf("%.1f", arr[i].sum);
	printf("\n");
}
void Rank(int s)
{
	for (int i = 0; i < s; i++)
		for (int j = s - 1; j > i; j--)
		{
			if (arr[j].cls < arr[j - 1].cls)
			{
				struct Info temp = arr[j];
				arr[j] = arr[j - 1];
				arr[j - 1] = temp;
			}
		}
	for (int i = 0; i < s; i++)
		for (int j = s - 1; j > 0; j--)
		{
			if (arr[j].cls == arr[j - 1].cls && arr[j].sum > arr[j - 1].sum)
			{
				struct Info temp = arr[j];
				arr[j] = arr[j - 1];
				arr[j - 1] = temp;
			}
		}
}
void Del(int* p)
{
	void Option();
	char str[7];
	scanf("%s", str);
	for (int i = 0; i < *p; i++)
	{
		if (strcmp(str, arr[i].num) == 0 || strcmp(str, arr[i].name) == 0)
		{
			for (int j = i + 1; j < *p; j++)
				arr[j - 1] = arr[j];
			(*p)--;
		}
	}
	for (int j = 0; j < *p; j++)
		Output(j);
	printf("continue?\n");
	char yon[4];
	scanf("%s", yon);
	if (strcmp(yon, "yes") == 0)
		Del(p);
	else
		Option();
}
void Find(int s)
{
	void Option();
	char n[6];
	scanf("%s", n);
	int l = strlen(n);
	if (l > 2)
	{
		for (int i = 0; i < s; i++)
			if (strcmp(arr[i].num, n) == 0)
				Output(i);
	}
	else
	{
		int c = 10 * (n[0] - '0') + n[1] - '0';
		for (int i = 0; i < s; i++)
			if (arr[i].cls == c)
				Output(i);
	}
	char yon[4];
	scanf("%s", yon);
	if (strcmp(yon, "yes") == 0)
		Find(s);
	else
		Option();
}
void Option()
{
	Menu();
	int c;
	scanf("%d", &c);
	int s = 3;
	int* p = &s;
	switch (c)
	{
	case 1:Input(0); break;
	case 2:Del(p); break;
	case 3:Find(s); break;
	case 4: {
		Rank(s);
		for (int i = 0; i < s; i++)
			Output(i);
		Option();
		break;
	}
	case 5: {
		for (int i = 0; i < s; i++)
			Output(i);
		Option();
		break;
	}
	case 6:break;
	}
}
int main()
{
	Option();
}