c - 我在 Windows 中写入文件时遇到问题？

Question

我正在尝试创建一个文本文件并向其写入内容，但是当我打开该文本文件时，输出出现错误。

示例:

Please enter number of students?
2
Please Enter details of the Students in the Following sequence: Name Age GPA
alex  18 3.2
dan  21 3.5

输出:

tttttttttkkkkkkkkksssssssssss

代码:

#include "stdafx.h"
#include<stdio.h>
#include<Windows.h>

struct Student {
    WCHAR name[20];
    int age;
    float gpa;
};

int _tmain(int argc, _TCHAR* argv[])
{
    struct Student St;
    int NumOfStu;
    printf("Please enter number of students\n");
    scanf("%d" , &NumOfStu);

    HANDLE f = CreateFile(L"d:\\SPR2.txt" , GENERIC_WRITE , 0 , NULL , CREATE_ALWAYS , FILE_ATTRIBUTE_NORMAL , NULL);
    if(f == INVALID_HANDLE_VALUE)
    {
        printf("Could not Create The File\n");
        return 0;
    }

    printf("Please Enter details of the Sutdents in the Following sequence: Name Age GPA\n");

    DWORD actual;

    for(int i=0 ;i<NumOfStu;i++)
    {
        scanf("%s %d %f" , &St.name , &St.age , &St.gpa );
        WriteFile(f ,  , sizeof(struct Student) , &actual , NULL); 
    }
    CloseHandle(f);

    return 0;
}

Answer 1

    scanf("%s %d %f" , &St.name , &St.age , &St.gpa );

name 已经衰减为指针，您不应该将 & 与它一起使用。

此外，它是一个宽字符串，这是 scanf 所不希望的。所以你会腐败。