编辑：

Question

所以我才刚刚开始编写代码。在我写了一小部分之后，我去测试了所写的内容。结果我什至不知道该怎么解释。

#include <stdio.h>
#include <stdlib.h>

struct window {
    unsigned left, top;
    unsigned width, height;
    unsigned zorder;
};

/*struct kurs {
    unsigned left, top; //ok, this isn't important
};*/

int main() { 
//the program starts before int, my console window opens up
    struct window *wnd;
    //struct kurs pokazivac; this isn't important also
    int number_wnd; 
    //then it just skips to int number_wnd line, and when I try to go to next step, it stays there, console windows opens up, asking some kind of input
    //if I press enter it skips to this empty line, and if I press next step it asks me some kind of input again
    printf("Number of windows: "); //when I press eneter it comes to beginning of this line,and when I press next step it moves to scanf
    scanf("%d", &number_wnd); //when I try to go next step from beginning of this line it opens up exe.common.inl

    wnd = (struct window*)malloc(number_wnd * sizeof(struct window));
    if (wnd == NULL) {
        printf("Memory problem!");
        return 0;
    }

    printf("\nInsert window positions: ");
    for (int i = 0;i < number_wnd;++i) { //this isn't important also, since it doesn't even get to here
        printf("%d. WINDOW\n", i + 1);

        printf("\tleft: ");
        scanf("%u", wnd[i].left);
        printf("\ttop: ");
        scanf("%u", wnd[i].top);

        printf("\twidth: ");
        scanf("%u", wnd[i].width);
        printf("\theight: ");
        scanf("%u", wnd[i].height);

        printf("\tzorder: ");
        scanf("%u", wnd[i].zorder);
        putchar('\n');
    }

    if (wnd != NULL) {
        free(wnd);
    }

    return 0;
}

这是我弄乱代码的结果，预结果（在结构kurs上没有/ ** /）甚至更奇怪。代码从该结构的末尾开始，后来它会报告错误，即使关闭，我也需要向左}关闭。

我正在Visual Studio中编写此代码，并在2个开放项目中进行了尝试。我的视觉工作室坏了吗？还是我的代码坏了？

编辑：

所以，我编译了它；现在我得到了错误：

LNK1104无法打开文件'C：\ Users \ Korisnik \ Desktop \ VSITE \ PMA \ Labosi \ lab10 \ Debug \ lab10.exe'

我应该如何对待？将粘贴代码复制到新项目还是？这是我第一次见面，而且我是编程的新手，所以我真的没有很多知识。

编辑2：

我将&放在了scanf中，甚至都不知道我怎么忽略了它。但是并没有改变问题。代码仍然在main之前开始。

Answer 1

这里

scanf("%u", wnd[i].left); /* you are missing & */

您要访问wnd[i]，但是您仅为wnd分配了内存，而没有为wnd[i]分配内存。代替使用结构指针，使用结构指针数组。对于例如

struct window *wnd[number_wnd];

以便您可以为每个wnd分配内存并将数据放入其中。

示例代码：

struct window {
        unsigned left, top;
        unsigned width, height;
        unsigned zorder;
};
int main(void) {

        int number_wnd;
        printf("Number of windows: \n");
        scanf("%d", &number_wnd);
        struct window *wnd[number_wnd]; /* array of structure pointer */

        printf("\nInsert window positions: ");
        for (int i = 0;i < number_wnd;++i) {
                printf("%d. WINDOW\n", i + 1);
                wnd[i] = (struct window*)malloc(sizeof(struct window)); /* for each wnd allocate memory equal to size of window */
                if (wnd[i] == NULL) {
                        printf("Memory problem!");
                        return 0;
                }

                printf("\tleft: ");
                scanf("%u", &wnd[i]->left); /* you need to give & as left is an integere */
                printf("\ttop: ");
                scanf("%u", &wnd[i]->top);

                printf("\twidth: ");
                scanf("%u", &wnd[i]->width);
                printf("\theight: ");
                scanf("%u", &wnd[i]->height);

                printf("\tzorder: ");
                scanf("%u", &wnd[i]->zorder);
                putchar('\n');
        }
        for (int i = 0;i < number_wnd;++i) {
                        free(wnd[i]); /* free each wnd */
        }
        return 0;
}

Answer 2

1-我在编译器上使用了相同的代码，并且工作得很好，我只需要更改以下内容

` 
     scanf("%u", &wnd[i].left);
     printf("\ttop: ");


    scanf("%u", &wnd[i].top);

    printf("\twidth: ");
    scanf("%u", &wnd[i].width);
    printf("\theight: ");
    scanf("%u", &wnd[i].height);

    printf("\tzorder: ");
    scanf("%u", &wnd[i].zorder);`

程序不读取printf并在main之前启动？

编辑：

编辑2：

2 个答案: