从二进制文件存储图像的动态Char数组：C

Question

我正在学习C编程，并且有一个将动态内存分配给数组的问题。

我正在尝试读取二进制文件（它包含ascii art，这是一个图像）。前两行分别包含宽度（100）和高度（48）。其次是ascii艺术。

void readDimension(FILE *inFile, int *width, int *height)
{
    int i;
    for (i = 0; i < 2; i++)
    {
        if (i == 0)
        {
            fscanf(inFile, "%d", width);
        }
        if (i == 1)
        {
            fscanf(inFile, "%d", height);
        }
    }
}

unsigned char *foo(char *filename, int *width, int *height)
{
    // Inside Foo I must create dynamic array of char to store image data
    // Recommendation is to used fread()
    // Also account for the carriage return at the end of file

    **I am stuck, in how to allocate array dynamically and read data into the same**
}

int main(int argc, char** argv)
{
    FILE *inFile;
    int width, height;



    if (argc == 1)
    {
        printf("Please specify a file name.\n");
    }
    else if (argc == 2)
    {
        inFile = fopen(argv[1], "rb");
        if (inFile != NULL)
        {
            readDimension(inFile, &width, &height);
            foo(argv[1], &width, &height);
        }
        else
        {
            printf("Error: File Not Found %s", argv[1]);
        }   
    }

    printf("Width: %d\n", width);
    printf("Height: %d\n", height);
}