You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
91 lines
1.6 KiB
91 lines
1.6 KiB
}
|
|
else
|
|
{
|
|
printf("学生已存在");
|
|
}
|
|
}
|
|
|
|
//修改
|
|
void update_data(void)
|
|
{
|
|
int num;
|
|
printf("输入学生学号:");
|
|
scanf("%d", &num);
|
|
int f = 0;
|
|
for (int i = 0; i < num_parts; i++)
|
|
{
|
|
if (num == stu[i].number)
|
|
{
|
|
f = 1;
|
|
break;
|
|
}
|
|
}
|
|
if (f == 0)
|
|
{
|
|
printf("学生不存在");
|
|
}
|
|
else
|
|
{
|
|
printf("输入学生学号:");
|
|
scanf("%d", &stu[num].number);
|
|
printf("输入学生姓名:");
|
|
scanf("%s", stu[num].name);
|
|
printf("输入学生成绩:");
|
|
scanf("%d", &stu[num].score);
|
|
printf("学生 %d 已更新", num);
|
|
}
|
|
}
|
|
|
|
//删除
|
|
void delete_data(void)
|
|
{
|
|
int num;
|
|
printf("输入学生学号:");
|
|
scanf("%d", &num);
|
|
int f = 0, i, j;
|
|
for (i = 0; i < num_parts; i++)
|
|
{
|
|
if (num == stu[i].number)
|
|
{
|
|
f = 1;
|
|
break;
|
|
}
|
|
}
|
|
if (f == 0)
|
|
{
|
|
printf("学生不存在");
|
|
}
|
|
else
|
|
{
|
|
for (j = i; j < num_parts - 1; j++)
|
|
{
|
|
stu[j] = stu[j + 1];
|
|
}
|
|
num_parts--;
|
|
printf("删除成功");
|
|
}
|
|
}
|
|
|
|
void read_data(void)
|
|
{
|
|
puts("读取数据");
|
|
printf("请输入文件名");
|
|
char filename[256];
|
|
scanf("%s", filename);
|
|
|
|
FILE *fp = fopen(filename, "r");
|
|
if (fp == NULL)
|
|
{
|
|
perror(filename);
|
|
return;
|
|
}
|
|
int i = 0;
|
|
while (fscanf(fp, "%d,%[^,],%d", &stu[i].number, stu[i].name, &stu[i].score) == 3)
|
|
{
|
|
i++;
|
|
}
|
|
fclose(fp);
|
|
num_parts = i;
|
|
printf("读取 %d 记录\n", num_parts);
|
|
}
|