C语言中文件的打开问题

Question

int main()
{
    struct StudentType student[1000]={
            {1001,"张大仙","男",29,20},
            {1002,"大黑龙","龙",158,98},
            {1003,"小帅哥","男",65,66},
            {1004,"小美女","女",18,55}
        };
    StudentType *pstudent;
    pstudent=student;
    int size=sizeof(struct StudentType);
    FILE *fp=fopen("C:\\Users\HR\Desktop\555.txt","wb+");
        if( (fp=fopen("C:\\Users\HR\Desktop\555.txt","wb+"))==NULL)
        {  //以二进制方式打开
            puts("Fail to open file!");
            return(0);
        }
    fwrite(pstudent,size,5,fp);
    rewind(fp);
    fread(pstudent,size,5,fp);
        fclose(fp);

Answer 1

wb 不是二进制写入吗？你这写进去的是二进制？