fwrite fread fprintf fscanf 的问题
程序代码：#include<stdio.h>
#include<stdlib.h>
struct student
{
int num;
char name[10];
float score[3];
float aver;
}stu[5];
int main(void)
{
FILE *fp;
char filename[20];
int i,j;
float sum;
for(i=0;i<5;i++)
{
sum=0;
printf("\ninput score of student %d\n",i+1);
printf("NO: ");
scanf("%d",&stu[i].num);
printf("name:");
scanf("%s",stu[i].name);
for(j=0;j<3;j++)
{
printf("score %d:",j+1);
scanf("%f",&stu[i].score[j]);
sum=sum+stu[i].score[j];
}
stu[i].aver=sum/3;
}
puts("please input the filename:");
scanf("%s",filename);
if((fp=fopen(filename,"w"))==NULL)
{
printf("file can not open\n!");
exit(0);
}
for(i=0;i<5;i++)
{
if(fwrite(&stu[i],sizeof(struct student),1,fp)!=1)//fprintf(fp,"%d %s %f %f %f %f",stu[i].num,stu[i].name,stu[i].score[0],stu[i].score[1],stu[i].score[2],stu[i].aver);
{
printf("file write error!\n");
}
}
fclose(fp);
fp=fopen(filename,"r");
for(i=0;i<5;i++)
{
fread(&stu[i],sizeof(struct student),1,fp);//fcanf(fp,"%d %s %f %f %f %f",stu[i].num,stu[i].name,stu[i].score[0],stu[i].score[1],stu[i].score[2],stu[i].aver);
printf("\n%d ,%s, %.2f, %.2f, %.2f, %.2f\n",stu[i].num,stu[i].name,stu[i].score[0],stu[i].score[1],stu[i].score[2],stu[i].aver);
}
fclose(fp);
return 0;
}用fwite和fread的时候，能够正确的在屏幕上显示出来，在文件中是乱码，我想让在文件中不是乱码，就用了fprintf fscanf 但是老不成功啊，不知道咋回事，我的代码如上，希望高手给予指教
