实验7

任务四

• 源代码

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

#define N 50

struct DATE
{
	char a[N];
	int b;
};

void write();
int fun(int n, char* str[]);

int main()
{
	int n, i;
	struct DATE k[N];
	char* str[] = { "0123456789-0123456789",
					"nuist2026",
					"cocmos galaxy" };

	FILE* fp;
	fp = fopen("data4.txt", "w");

	if (fp == NULL)
	{
		printf("File open error!");
		return;
	}

	n = sizeof(str) / sizeof(str[0]);

	for (int i = 0; i < n; i++)
	{
		fprintf(fp, "%s\n", str[i]);
	}

	fclose(fp);

	printf("date4.txt统计结果：\n");

	strcpy(k[0].a, "行数:");
	strcpy(k[1].a, "字符数（不计空白符）:");
	k[0].b = n;

	k[1].b=fun(n, str);

	for (int i = 0;i < 2;i++)
	{
		printf("%-25s %d\n", k[i].a, k[i].b);
	}

	return 0;
}

int fun(int n, char* str[])
{
	int i, j,t=0;
	
	for(i=0;i<n;i++)
	{
		for(j=0;str[i][j]!='\0';j++)
		{
			if(str[i][j] != ' ' && str[i][j] != '\t' && str[i][j] != '\n')
			{
				t++;
			}
		}
	}
	
	return t;
}

• 结果截图
  
  

任务五

• 源代码

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

#define N 50

struct STU
{
	int number;
	char name[N];
	int s1;
	int s2;
	int s;
	char grade[N];
};

void read(struct STU st[], int n);
int process(struct STU st[], int n, struct STU st_pass[]);
void write(struct STU st_pass[], int n);
void output(struct STU st_pass[], int n);

int main()
{
	int n, i;
	struct STU st[] = {
						{1001, "桃乐丝", 36, 55},
						{1002, "稻草人", 28, 40},
						{1003, "千寻",   39, 55},
						{1004, "白龙",   35, 60},
						{1005, "汤婆婆", 20, 35},
						{1006, "无脸男", 33, 50},
						{1007, "希达",   40, 32},
						{1008, "巴鲁",   28, 30},
						{1009, "苏菲",   37, 60},
						{1010, "哈尔",   35, 57}
						};
	struct STU st_pass[N];
	
	n = sizeof(st) / sizeof(st[0]);
	
	FILE* fp;
	fp = fopen("examinee.txt", "w");

	if (fp == NULL)
	{
		printf("File open error!");
		return;
	}

	for (int i = 0; i < n; i++)
	{
		fprintf(fp, "%-10d %-10s %-10d %-10d\n", st[i].number, st[i].name, st[i].s1, st[i].s2);
	}

	fclose(fp);

	read(st, n);
	n = process(st, n, st_pass);
	write(st_pass, n);
	output(st_pass, n);
	
	return 0;
}

void read(struct STU st[], int n)
{
	FILE* fp;
	fp = fopen("examinee.txt", "r");

	if (fp == NULL)
	{
		printf("File open error!");
		return;
	}

	for (int i = 0; i < n; i++)
	{
		fscanf(fp, "%d %s %d %d", &st[i].number, st[i].name, &st[i].s1, &st[i].s2);
	}

	fclose(fp);
}

int process(struct STU st[], int n, struct STU st_pass[])
{
	int j = 0;
	for (int i = 0; i < n; i++)
	{
		st[i].s = st[i].s1 + st[i].s2;
		if (st[i].s>=60)
		{
			st_pass[j] = st[i];
			strcpy(st_pass[j].grade, "合格");
			j++;
		}
	}

	return j;
}

void write(struct STU st_pass[], int n)
{
	FILE* fp;
	fp = fopen("list_pass.txt", "w");

	if (fp == NULL)
	{
		printf("File open error!");
		return;
	}

	
	fprintf(fp, "%-12s %-12s %-10s %-10s %-10s %-12s\n",
		"准考证号", "姓名", "客观成绩", "主观成绩", "总分", "成绩等级");


	for (int i = 0; i < n; i++)
	{
		fprintf(fp, "%-12d %-12s %-10d %-10d %-10d %-12s\n", st_pass[i].number, st_pass[i].name, st_pass[i].s1, st_pass[i].s2, st_pass[i].s, st_pass[i].grade);
	}

	fclose(fp);
}

void output(struct STU st_pass[], int n)
{
	printf( "%-12s %-12s %-10s %-10s %-10s %-12s\n",
		"准考证号", "姓名", "客观成绩", "主观成绩", "总分", "成绩等级");
	for (int i = 0; i < n; i++)
	{
		printf("%-12d %-12s %-10d %-10d %-10d %-12s\n", st_pass[i].number, st_pass[i].name, st_pass[i].s1, st_pass[i].s2, st_pass[i].s, st_pass[i].grade);
	}
}

• 结果截图
  

任务六

• 源代码

#define _CRT_SECURE_NO_WARNINGS 
#include <stdio.h>
#include <stdlib.h> 
#include <time.h> 
#include <string.h>

#define N 100
#define TOTAL_STUDENTS 80
#define LUCKY_NUM 5

struct STU
{
	int number;
	char name[N];
	char class[N];
};

void read(struct STU st[]);
void process(struct STU st[], struct STU lucky[]);
void write(struct STU lucky[]);
void output(struct STU lucky[]);
int stuCount = 0;

int main()
{
	srand((unsigned int)time(NULL));
	int i;
	struct STU st[N];
	struct STU lucky[5];

	read(st);
	process(st, lucky);

	write(lucky);
	output(lucky);

	return 0;
}

void read(struct STU st[])
{
	FILE* fp;
	int count = 0;

	fp = fopen("list.txt", "r");
	if (fp == NULL) {
		printf("文件打开失败！\n");
	}

	while (fscanf(fp, "%d %s %[^\n]\n", &st[count].number, st[count].name, st[count].class) == 3) {
		count++;
		if (count >= TOTAL_STUDENTS) break;
	}

	fclose(fp);
	stuCount = count;
}

void process(struct STU st[], struct STU lucky[])
{
	int chosen[LUCKY_NUM];
	int count = 0;

	while (count < LUCKY_NUM) {
		int r = rand() % stuCount;
		int duplicate = 0;
		for (int i = 0; i < count; i++) {
			if (chosen[i] == r) {
				duplicate = 1;
				break;
			}
		}
		if (!duplicate) {
			chosen[count] = r;
			count++;
		}
	}

	for (int i = 0; i < LUCKY_NUM; i++) {
		lucky[i] = st[chosen[i]];
	}
}

void write(struct STU lucky[])
{
	FILE* fp;
	fp = fopen("lucky.txt", "w");

	if (fp == NULL)
	{
		printf("File open error!");
		return;
	}

	for (int i = 0; i < LUCKY_NUM; i++)
	{
		fprintf(fp, "%d %s %s\n", lucky[i].number, lucky[i].name, lucky[i].class);
	}

	fclose(fp);
}

void output(struct STU lucky[])
{
	struct STU temp;
	int i, j;
	for (int i = 0; i < LUCKY_NUM - 1; i++)
	{
		for (int j = 0; j < LUCKY_NUM - i - 1; j++)
		{
			if (lucky[j].number > lucky[j + 1].number)
			{
				temp = lucky[j];
				lucky[j] = lucky[j + 1];
				lucky[j + 1] = temp;
			}
		}
	}
	for (int i = 0; i < LUCKY_NUM; i++)
	{
		printf("%d %s %s\n", lucky[i].number, lucky[i].name, lucky[i].class);
	}
}

• 结果截图