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@ -1,5 +1,98 @@
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#define NAME_LEN 31
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#define MAX_PARTS 100
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//保存学生成绩信息的结构
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struct students
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{
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int number;
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char name[NAME_LEN + 1];
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int score;
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};
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static struct students stu[MAX_PARTS];
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static int num_parts = 0;
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#include <stdio.h>
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#include <stdlib.h>
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//定义常量
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#define CMD_QUIT 0
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#define CMD_QUERY 4
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#define CMD_INSERT 5
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#define CMD_UPDATE 6
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#define CMD_DELETE 7
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#define CMD_READ 1
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#define CMD_SAVE 2
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#define CMD_PRINT 3
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#define CMD_SORT 8
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#define CMD_CHART 9
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// 菜单命令的编号
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// 函数声明
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void init(void);
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void quit(void);
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void display_menu(void);
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int make_choice(void);
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void read_data(void); // 读取
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void save_data(void); // 保存
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void print_data(void); // 打印
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void query_data(void); // 查询
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void add_data(void); // 添加
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void update_data(void); // 修改
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void delete_data(void); // 删除
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void sort_data(void); // 排序
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void make_chart(void); // 图表
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int confirm(const char *msg);
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// 主程序
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int main(void)
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{
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init(); // 程序启动
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while (1)
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{
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display_menu();
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int c = make_choice();
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switch (c)
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{
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case CMD_QUERY:
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query_data();
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break;
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case CMD_INSERT:
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add_data();
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break;
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case CMD_UPDATE:
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update_data();
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break;
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case CMD_DELETE:
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delete_data();
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break;
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case CMD_READ:
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read_data();
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break;
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case CMD_SAVE:
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save_data();
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break;
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case CMD_PRINT:
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print_data();
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break;
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case CMD_SORT:
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sort_data();
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break;
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case CMD_CHART:
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make_chart();
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break;
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default:
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puts("命令错误，请重新选择");
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break;
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case CMD_QUIT:
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if (confirm("确定要退出吗？"))
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quit(); // 仅在确认后退出
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break;
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}
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}
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return 0;
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}
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<<<<<<< HEAD
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<<<<<<< HEAD
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=======
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>>>>>>> ad11bacb9e5e62e3d66d89b598e042d9c52b72df
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// 函数定义
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void init(void)
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@ -67,7 +160,33 @@ void print_data(void)
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//添加
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void add_data(void)
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<<<<<<< HEAD
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=======
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=======
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{
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int num;
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printf("输入学生学号：");
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scanf("%d", &num);
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int f = 0;
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for (int i = 0; i < num_parts; i++)
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{
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if (num == stu[i].number)
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{
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f = 1;
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break;
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}
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}
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if (f == 0)
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{
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stu[num_parts].number = num;
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printf("输入学生姓名：");
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scanf("%s", &stu[num_parts].name);
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printf("输入学生成绩：");
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scanf("%d", &stu[num_parts].score);
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num_parts++;
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printf("学生 %d 添加成功\n", num);
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}
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>>>>>>> ad11bacb9e5e62e3d66d89b598e042d9c52b72df
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else
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{
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printf("学生已存在");
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@ -167,4 +286,91 @@ void read_data(void)
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num_parts = i;
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printf("读取 %d 记录\n", num_parts);
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}
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<<<<<<< HEAD
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>>>>>>> 3aaec9cca337fd57c2c1b138e8ad7fee782cc079
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=======
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void save_data(void)
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{
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puts("保存数据");
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printf(" 请输入文件名");
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char filename[256];
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scanf("%s", filename);
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FILE *fp = fopen(filename, "r");
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if (fp == NULL)
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{
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perror(filename);
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return;
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}
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for (int i = 0; i < num_parts; i++)
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{
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fprintf(fp, "%d,%s,%d\n", stu[i].number, stu[i].name, stu[i].score);
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}
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fclose(fp);
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printf("保存%d 成功", num_parts);
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}
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//排序
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void sort_data(void)
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{
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printf("排序\n");
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for (int i = 0; i < num_parts; i++)
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{
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int change = 0;
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static struct students t;
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for (int j = 0; j < num_parts - i - 1; j++)
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{
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if (stu[j].number > stu[j + 1].number)
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{
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t = stu[j + 1];
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stu[j + 1] = stu[j];
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stu[j] = t;
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change = 1;
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}
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}
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if (!change)
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break;
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}
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for (int i = 0; i < num_parts; i++)
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{
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int change = 0;
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static struct students t;
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for (int j = 0; j < num_parts - i - 1; j++)
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{
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if (stu[j].score > stu[j + 1].score)
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{
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t = stu[j + 1];
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stu[j + 1] = stu[j];
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stu[j] = t;
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change = 1;
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}
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}
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if (!change)
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break;
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}
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printf("排序已完成");
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}
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void make_chart(void)
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{
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printf("NUMBER | NAME score\n");
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for (int i = 0; i < num_parts; i++)
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{
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printf("%d | %s ", stu[i].number, stu[i].name);
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for (int j = 0; j < stu[i].score; j++)
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{
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printf("*");
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}
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printf("\n");
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}
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printf("图表\n");
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}
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int confirm(const char *msg)
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{
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char c = 'n'; // 默认选择是 no
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printf("%s(Y/N): ", msg); // 提示输入 yes/no 进行确认
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scanf(" %c%*[^\n]", &c); // 读取第一个字符，忽略剩余字符
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return c == 'y' || c == 'Y'; // 返回确认结果
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}
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>>>>>>> ad11bacb9e5e62e3d66d89b598e042d9c52b72df
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p8rq79j4h
wangkaixuan
p3crvf5xo