#include<stdio.h>
#include<stdlib.h>
typedef struct Student
{
    int id;
    int age;
}ST,*PST;
void input(PST);
void output(PST);
void write(PST);
void read(PST);

main()
{
    ST stu[2];
    input(stu);
    output(stu);
    write(stu);
    read(stu);
}


void input(PST stu)
{
    int i;
    for (i=0; i<2; i++)
        scanf("%d%d",&stu[i].id,&stu[i].age);            
}

void output(PST stu)
{
    int i;
    for (i=0; i<2; i++)
        printf("%d %d\n",stu[i].id,stu[i].age);
}

void write(PST stu)
{
    int i;
    PST p = stu;
    FILE *fp;
    if ((fp = fopen("stu_list.txt","wb")) == NULL)
        {
            printf("write error");
            return;
        }
    for (i=0; i<2;i++)
        {
            if (fwrite(p,sizeof(ST),1,fp) != 1)
                {
                    printf("write error");
                    break;
                }
            p++;
        }
    fclose(fp);
}

void read(PST stu)
{
    PST p = stu;
    FILE *fp;
    fp = fopen("stu_list.txt","rb");
    while (!feof(fp))
        {
            if ( fread(p,sizeof(ST),1,fp) )
                printf("%d %d\n",p->id,p->age);
        }
    fclose(fp);
}

什么叫出现结果还报错？

就是有错误，但是出现了数值

请说清楚什么结果，什么错误。

典型的“说都不会话了”

路过