unsigned char p[500 * 150 *3];
#pragma pack(1)
struct HEADER
{
   unsigned char type1;                 /* Magic identifier            */
   unsigned char type2;
   unsigned int size;                       /* File size in bytes          */
   unsigned short int reserved1, reserved2;
   unsigned int offset;                     /* Offset to image data, bytes */
};
#pragma pack()
typedef struct HEADER BMPHEADER;
struct INFOHEADER{
   unsigned int size;               /* Header size in bytes      */
   int width,height;                /* Width and height of image */
   unsigned short int planes;       /* Number of colour planes   */
   unsigned short int bits;         /* Bits per pixel            */
   unsigned int compression;        /* Compression type          */
   unsigned int imagesize;          /* Image size in bytes       */
   int xresolution,yresolution;     /* Pixels per meter          */
   unsigned int ncolours;           /* Number of colours         */
   unsigned int importantcolours;   /* Important colours         */
};
typedef struct INFOHEADER BMPINFOHEADER;


void bmpcreate(const char * name)
{
        BMPHEADER bmpheader;
        BMPINFOHEADER bmpinfoheader;
        bmpheader.type1 = 0x42;
        bmpheader.type2 = 0x4D;
        bmpheader.size = sizeof(p)+54;
        bmpheader.offset = 54;

        bmpinfoheader.size = 40;
        bmpinfoheader.width = 500;
        bmpinfoheader.height = 150;
        bmpinfoheader.planes = 1;
        bmpinfoheader.bits = 24;
        bmpinfoheader.compression = 0;
        bmpinfoheader.imagesize = sizeof(p);
        bmpinfoheader.xresolution = 0;
        bmpinfoheader.yresolution = 0;
        bmpinfoheader.ncolours = 0;
        bmpinfoheader.importantcolours = 0;

        FILE *fstream;
        fstream = fopen(name,"wb");
        fwrite(&bmpheader,sizeof(BMPHEADER),1,fstream);
        fwrite(&bmpinfoheader,sizeof(BMPINFOHEADER),1,fstream);
        fwrite(p,sizeof(p),1,fstream);
        fclose(fstream);
}