#include<stdio.h>            //专用路径E:\a.txt
#include<process.h>
void main()
{
    FILE *fp;
    char cChar[30];
    struct sStruct
    {
        char ilnt1[30];
        char ilnt2[30];
        char ilnt3[30];
    }xXs[100];
    int i,n;
    printf("输入存储学生资料文本的路径：");
    scanf("%s",&cChar);

    printf("输入学生总数：");
    scanf("%d",&n);
    fflush(stdin);
    for(i=0;i<n;i++)
    {
        printf("第%d个学生\n",i+1);
        printf("数学成绩：");
        scanf("%s",xXs[i].ilnt1);
        printf("语文成绩：");
        scanf("%s",xXs[i].ilnt2);
        printf("英语成绩：");
        scanf("%s",xXs[i].ilnt3);
        printf("\n");
    }

    if((fp=fopen(cChar,"wb"))==NULL)
    {
        printf("文本开流失败");
        exit(0);
    }
    for(i=0;i<n;i++)
    {
        if(fwrite(&xXs[i],sizeof(struct sStruct),1,fp)!=1)
        printf("第%d个学生成绩资料，数学：%s，语文：%s，英文：%s\n",i+1,xXs[i].ilnt1,xXs[i].ilnt2,xXs[i].ilnt3);
    }

    fclose(fp);
}

这是书籍的例题，我感觉我的作业和例题差不多呀

#include <stdio.h>
#include<process.h>
struct address_list                                            
{
    char name[10];
    char adr[20];
    char tel[15];
} info[100];
void save(char *name, int n)                                    
{
    FILE *fp;                                       
    int i;
    if ((fp = fopen(name, "wb")) == NULL)                        
    {
        printf("cannot open file\n");
        exit(0);
    }
    for (i = 0; i < n; i++)
        if (fwrite(&info[i], sizeof(struct address_list), 1, fp) != 1)        
            printf("file write error\n");                           
    fclose(fp);                                                
}
void show(char *name, int n)                        
{
    int i;
    FILE *fp;                                       
    if ((fp = fopen(name, "rb")) == NULL)                    
    {
        printf("cannot open file\n");
        exit(0);
    }
    for (i = 0; i < n; i++)
    {
        fread(&info[i], sizeof(struct address_list), 1, fp);   
        printf("%15s%20s%20s\n", info[i].name, info[i].adr,info[i].tel);
    }
    fclose(fp);                                       
}
main()
{
    int i, n;                                    
    char filename[50];                           
    printf("how many ?\n");
    scanf("%d", &n);                                
    printf("please input filename:\n");
    scanf("%s", filename);                           
    printf("please input name,address,telephone:\n");
    for (i = 0; i < n; i++)                           
    {
        printf("NO%d", i + 1);
        scanf("%s%s%s", info[i].name, info[i].adr, info[i].tel);
        save(filename, n);                        
    }
    show(filename, n);                        
}

书籍的例题和我差不多吧

但是看着好难看

这是书籍代码的效果

我的编译器是vc6，其实不是编译器问题，二楼代码是书籍例题的正常代码，一楼代码是我码的不正常代码，刚才我使用好笨的方法，将二楼例题代码一步步的改成我的模样，发现是结构体的作用域问题，二楼的结构体如果做成局部结构体，文本值也会出现乱码，只要把结构体作用域改成全局就没有了，具体啥原因，明天再找，好困

找到了，结构体的作用域原因