【C/PTA —— 15.结构体2（课外实践）】

7-1 一帮一

#include<stdio.h>
#include<string.h>

struct student
{
   
    int a;
    char name[20];
};

struct student1
{
   
    int b;
    char name1[20];
};

int main()
{
   
    struct student  s1[50];
    struct student1 s2[50];
    struct student1 s3[50];

    int i, n, j = 0, t = 0, c, d;
    scanf("%d", &n);
    for (i = 0; i < n; i++)
    {
   
        scanf("%d %s", &s1[i].a, s1[i].name);
    }

    for (i = 0; i < n; i++)
    {
   
        if (s1[i].a == 1)
        {
   
            s2[j].b = i;
            strcpy(s2[j].name1, s1[i].name);
            j++;
        }
        if (s1[i].a == 0)
        {
   
            s3[t].b = i;
            strcpy(s3[t].name1, s1[i].name);
            t++;
        }
    }

    c = n / 2 - 1, d = n / 2 - 1;
    j = 0, t = 0;
    for (i = 0; i < n / 2; i++)
    {
   
        if (s3[j].b < s2[t].b)
        {
   
            printf("%s %s\n", s3[j].name1, s2[c].name1);
            j++;
            c--;
        }
        else
        {
   
            printf("%s %s\n", s2[t].name1, s3[d].name1);
            t++;
            d--;
        }
    }
    return 0;
}

7-2 考试座位号

#include<stdio.h>
struct student
{
   
	char num[17];
	int s;
	int k;
};

int main()
{
   
	int n = 0;
	scanf("%d", &n);
	struct student stu[1000]={
   0};
	for (int i = 0; i < n; i++)
	{
   
		scanf("%s %d %d", stu[i].num, &stu[i].s, &stu[i].k);
	}
	int m = 0,ret;     
	scanf("%d", &m);
	for (int i = 0; i < m; i++)
	{
   
		scanf("%d", &ret);
        int j=0;
		for (j = 0; j < n; j++)
		{