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}
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/ 函数定义
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void init(void)
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{
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puts("程序启动");
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}
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void quit(void)
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{
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puts("程序退出");
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exit(EXIT_SUCCESS);
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}
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void display_menu(void)
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{
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printf("\n%d 读取 | %d 保存 | %d 打印 | %d 查询 | %d 添加\n%d 修改 | %d 删除 | %d 排序 | %d 图表 | %d 退出\n\n", CMD_READ, CMD_SAVE, CMD_PRINT, CMD_QUERY, CMD_INSERT, CMD_UPDATE, CMD_DELETE, CMD_SORT, CMD_CHART, CMD_QUIT);
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}
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int make_choice(void)
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{
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int c; // 用户输入
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int n = 0; // 正确读入的数据项个数
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while (n == 0)
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{
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printf("请选择:");
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n = scanf("%d", &c); // 尝试读入整数 c
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scanf("%*[^\n]"); // 跳过一行中剩余的字符
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}
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return c;
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}
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//查询
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void query_data(void)
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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 = -1;
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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 = i;
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break;
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}
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}
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if (f == -1)
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{
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printf("学生不存在");
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}
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else
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{
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printf("学生学号:%d\n", stu[f].number);
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printf("学生姓名:%s\n", stu[f].name);
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printf("学生成绩:%d\n", stu[f].score);
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}
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}
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//打印
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void print_data(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 %d\n", stu[i].number, stu[i].name, stu[i].score);
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}
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}
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//添加
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void add_data(void)
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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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