A program that generates BMP in Linux

Many people may be confused about memory alignment. Recently, I helped them write test programs and used a BMP
Generator, write a relatively simple version, only for 24-bit real color, now the code is published

# Include <iostream>
Using namespace STD;
Typedef long bool;
Typedef long;
Typedef unsigned char byte;
Typedef unsigned long DWORD;
Typedef unsigned short word;
Typedef struct {
Word bftype; // 2
DWORD bfsize; // 4
Word bfreserved1; // 2
Word bfreserved2; // 2
DWORD bfoffbits; // 4
}__ Attribute _ (packed) filehead;
Typedef struct {
DWORD bisize; // 4
Long biwidth; // 4
Long biheight; // 4
Word biplanes; // 2
Word bibitcount; // 2
DWORD bicompress; // 4
DWORD bisizeimage; // 4
Long bixpelspermeter; // 4
Long biypelspermeter; // 4
DWORD biclrused; // 4
DWORD biclrimportant; // 4
}__ Attribute _ (packed) infohead;
/* Typedef struct
{
Unsigned char rgbblue;
Unsigned char rgbgreen;
Unsigned char rgbred;
Unsigned char rgbreserved;
} Rgbquad; // It may be useless */
Typedef struct
{
Byte B;
Byte g;
Byte R;
} Rgb_data; // RGB type
Int BMP _generator (char * filename, int width, int height, unsigned char * Data)
{
Filehead BMP _head;
Infohead BMP _info;
Int size = width * height * 3;
// Test Data
/* Rgb_test BMP _data [width] [height];
Int I, J;
For (I = 0; I <width; I ++)
For (j = 0; j {
BMP _data [I] [J]. G = BMP _data [I] [J]. B = 0;
BMP _data [I] [J]. r = 0xff;
}
*/
BMP _head.bftype = 0x4d42;
BMP _head.bfsize = size + sizeof (filehead) + sizeof (infohead); // 24 + head + info
No Quad
BMP _head.bfreserved1 = BMP _head.bfreserved2 = 0;
BMP _head.bfoffbits = bmp_head.bfSize-size;
// Finish the initial of head
BMP _info.bisize = 40;
BMP _info.biwidth = width;
BMP _info.biheight = height;
BMP _info.biplanes = 1;
BMP _info.bibitcount = 24;
BMP _info.bicompress = 0;
BMP _info.bisizeimage = size;
BMP _info.bixpelspermeter = 0;
BMP _info.biypelspermeter = 0;
BMP _info.biclrused = 0;
BMP _info.biclrimportant = 0;
// Finish the initial of infohead;
// Copy the data

// Fstream file3 (filename );
File * FP;
If (! (FP = fopen (filename, "WB") return 0;
// Zhunan 2.6.00: 58
Fwrite (& BMP _head, 1, sizeof (filehead), FP );
Fwrite (& BMP _info, 1, sizeof (infohead), FP );
Fwrite (data, 1, size, FP );
Fclose (FP );

Return 1;

}

Int main (INT argc, char ** argv)
{
Int I, J;
Rgb_data buffer [512] [512];
// Cout <"Usage: BMP _generator width height" <Endl;
Cout <"programmed by zhunan" <Endl;
Cout <"API guide:" <Endl;
Cout <"BMP _generator (char * filename, int width, int height, unsigned
Char * data); "<Endl;
Memset (buffer, 0, sizeof (buffer ));
// Please edit width and height here
// Zhunan testdata
// Hard Coding
For (I = 0; I <256; I ++)
For (j = 0; j <256; j ++)
{
// Buffer [I] [J]. G = buffer [I] [J]. B = 0x00;
Buffer [I] [J]. r = 0xff;
}
BMP _generator ("/home/zhunan/1234.bmp", 512,512, (byte *) buffer );
Return 1;
}